Easier access to scientific data
Brought to you by NOAA NMFS SWFSC ERD
|
ERDDAP
Easier access to scientific data |
Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | IOOS Glider - CSMI - nokomis-20180510T1824-delayed
|
| Institution: | US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office (Dataset ID: ioos-gliderdac-nokomis-20180510T1824-delayed) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Make a graph
|
Attributes {
s {
conductivity {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float64 accuracy 0.001;
Float32 actual_range 0.00552, 0.00681;
String ancillary_variables " qartod_conductivity_flat_line_flag qartod_conductivity_gross_range_flag qartod_conductivity_rate_of_change_flag qartod_conductivity_spike_flag qartod_conductivity_primary_flag";
Int32 bytes 4;
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 0.0;
String coordinates "time latitude longitude depth";
String coverage_content_type "physicalMeasurement";
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "Sea Water Electrical Conductivity";
String non_null_count "166023";
String observation_type "measured";
String parameter_id "49";
String platform "platform";
Float64 precision 1.0e-5;
Float64 resolution 1.0e-5;
String sensor "sci_water_cond";
String source_sensor "sci_water_cond";
String standard_name "sea_water_electrical_conductivity";
String unit_id "67";
String units "S.m-1";
Float32 valid_max 10.0;
Float32 valid_min 0.0;
}
crs {
Int32 _FillValue -2147483647;
String coordinates "time latitude longitude depth";
String epsg_code "EPSG:4326";
String grid_mapping_name "latitude_longitude";
Float64 inverse_flattening 298.257223563;
String ioos_category "Other";
String long_name "http://www.opengis.net/def/crs/EPSG/0/4326";
String non_null_count "0";
Float64 semi_major_axis 6378137.0;
}
density {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float32 actual_range 999.9623, 1000.61;
String ancillary_variables " qartod_density_flat_line_flag qartod_density_gross_range_flag qartod_density_rate_of_change_flag qartod_density_spike_flag qartod_density_primary_flag";
Float64 colorBarMaximum 1032.0;
Float64 colorBarMinimum 1020.0;
String coordinates "time latitude longitude depth";
String instrument "instrument_ctd";
String ioos_category "Other";
String long_name "Sea Water Density";
String non_null_count "0";
String observation_type "calculated";
String parameter_id "204";
String platform "platform";
String standard_name "sea_water_density";
String unit_id "17";
String units "kg.m-3";
Float32 valid_max 1040.0;
Float32 valid_min 1015.0;
}
depth {
Int32 _ChunkSizes 166;
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float32 _FillValue NaN;
Float64 accuracy 0.01;
Float32 actual_range -0.05950263, 123.5893;
String axis "Z";
Float64 colorBarMaximum 2000.0;
Float64 colorBarMinimum 0.0;
String colorBarPalette "OceanDepth";
String comment "Calculated from llat_pressure and llat_latitude using gsw.z_from_p";
String instrument "instrument_ctd";
String ioos_category "Location";
String long_name "Depth";
String non_null_count "369282";
String observation_type "calculated";
String platform "platform";
String positive "down";
Float64 precision 0.01;
String reference_datum "sea-surface";
Float64 resolution 0.01;
String source_sensor "llat_pressure,llat_latitude";
String standard_name "depth";
String units "m";
Float32 valid_max 2000.0;
Float32 valid_min 0.0;
}
instrument_ctd {
Byte _FillValue 127;
String _Unsigned "false";
String calibration_date "2012-08-30";
String calibration_report "2012-08-30";
String comment "Pumped";
String coordinates "time latitude longitude depth";
String factory_calibrated "2012-08-30";
String ioos_category "Identifier";
String long_name "CTD Metadata";
String make_model "Sea-Bird GPCTD";
String non_null_count "0";
String platform "platform";
String serial_number "9032";
String type "instrument";
String units "1";
}
instrument_flbbcd {
Int32 _FillValue -2147483647;
String calibration_date "2018-02-10";
String calibration_report "2018-04-06";
String comment "Chlorophyll a CDOM and Backscatter at 700nm ";
String coordinates "time latitude longitude depth";
String factory_calibrated "2018-02-10";
String ioos_category "Other";
String long_name "Sea-Bird Chlorophyll a CDOM and Backscatter Meter";
String make_model "Sea-Bird FLBBCD (SLK)";
String non_null_count "0";
String platform "platform";
String serial_number "4785";
String type "instrument";
}
instrument_optode {
Int32 _FillValue -2147483647;
String calibration_date "25 Oct 2012";
String calibration_report "26 Oct 2012";
String coordinates "time latitude longitude depth";
String factory_calibrated "25 Oct 2012";
String ioos_category "Other";
String long_name "Aanderaa Oxygen Sensor";
String make_model "Aanderaa Oxygen Optode 4831";
String non_null_count "0";
String platform "platform";
String serial_number "121";
String type "instrument";
}
lat_uv {
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String ioos_category "Location";
String long_name "Depth-averaged Latitude";
String non_null_count "0";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue NaN;
Float64 actual_range 46.74154095845944, 46.90836128930199;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Value is interpolated to provide an estimate of the latitude at the mid-point of the profile.";
String ioos_category "Location";
String long_name "Profile Latitude";
String non_null_count "369282";
String observation_type "calculated";
String platform "platform";
Int32 precision 5;
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
lon_uv {
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String ioos_category "Location";
String long_name "Depth-averaged Longitude";
String non_null_count "0";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue NaN;
Float64 actual_range -91.9284393978841, -91.70309588121401;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Value is interpolated to provide an estimate of the longitude at the mid-point of the profile.";
String ioos_category "Location";
String long_name "Profile Longitude";
String non_null_count "369282";
String observation_type "calculated";
String platform "platform";
Int32 precision 5;
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
m_water_depth {
Int32 _ChunkSizes 512;
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -1.0, 132.033;
Int32 bytes 4;
String coordinates "time latitude longitude depth";
String ioos_category "Other";
String long_name "m_water_depth";
String non_null_count "2560";
String parameter_id "93";
String sensor "m_water_depth";
String source_sensor "m_water_depth";
String standard_name "sea_floor_depth_below_sea_surface";
String type "f4";
String unit_id "19";
String units "m";
}
platform_meta {
Byte _FillValue 127;
String _Unsigned "false";
String comment "unit 338";
String coordinates "time latitude longitude depth";
String depth_rating "200m";
String glider_type "Slocum";
String id "nokomis";
String instrument "instrument_ctd,instrument_flbbcd,instrument_optode";
String ioos_category "Identifier";
String long_name "Platform Metadata";
String non_null_count "0";
String type "platform";
String units "1";
}
precise_lat {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range 46.74148, 46.90905833333333;
String axis "Y";
Int32 bytes 8;
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Interpolated latitude at each point in the time-series";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String coordinates "time latitude longitude depth";
String ioos_category "Location";
String long_name "Precise Latitude";
String non_null_count "0";
String observation_type "calculated";
String platform "platform";
Int32 precision 5;
String reference "WGS84";
String source_sensor "m_gps_lat";
String standard_name "latitude";
String units "degree_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
precise_lon {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range -91.92891499999999, -91.70298;
String axis "X";
Int32 bytes 8;
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Interpolated longitude at each point in the time-series";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String coordinates "time latitude longitude depth";
String ioos_category "Location";
String long_name "Precise Longitude";
String non_null_count "0";
String observation_type "calculated";
String platform "platform";
Int32 precision 5;
String reference "WGS84";
String source_sensor "m_gps_lon";
String standard_name "longitude";
String units "degree_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
precise_time {
Int32 _ChunkSizes 166;
Float64 actual_range 1.52597647802515e+9, 1.52632145409686e+9;
String axis "T";
Int32 bytes 8;
String calendar "gregorian";
String comment "Timestamp at each point in the time-series";
String coordinates "time latitude longitude depth";
String ioos_category "Time";
String long_name "Precise Time";
String non_null_count "0";
String observation_type "measured";
String platform "platform";
String source_sensor "m_present_time";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
Float64 valid_max 2.147483647e+9;
Float64 valid_min 0.0;
}
pressure {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float64 accuracy 0.01;
Float32 actual_range 0.0, 12466.0;
String ancillary_variables " qartod_pressure_flat_line_flag qartod_pressure_gross_range_flag qartod_pressure_rate_of_change_flag qartod_pressure_spike_flag qartod_monotonic_pressure_flag qartod_pressure_primary_flag";
String axis "Z";
Int32 bytes 4;
Float64 colorBarMaximum 2000.0;
Float64 colorBarMinimum 0.0;
String coordinates "time latitude longitude depth";
String instrument "instrument_ctd";
String ioos_category "Pressure";
String long_name "Sea Water Pressure";
String non_null_count "76933";
String observation_type "measured";
String parameter_id "179";
String platform "platform";
String positive "down";
Float64 precision 0.01;
String reference_datum "sea-surface";
Float64 resolution 0.01;
String sensor "sci_water_pressure";
String source_sensor "sci_water_pressure";
String standard_name "sea_water_pressure";
String unit_id "14";
String units "hectopascal";
Float32 valid_max 2000.0;
Float32 valid_min 0.0;
}
profile_id {
Int32 _FillValue 2147483647;
Int32 actual_range 1, 1235;
String ancillary_variables "profile_time";
String cf_role "profile_id";
String comment "Unique identifier of the profile. The profile ID is the mean profile timestamp";
String ioos_category "Identifier";
String long_name "Profile ID";
String non_null_count "369282";
Int32 valid_max 1235;
Int32 valid_min 1;
}
qartod_conductivity_flat_line_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
Float64 eps 1.1920929e-7;
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Int32 high_reps 8;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_electrical_conductivity";
Int32 low_reps 4;
String non_null_count "166023";
String qartod_test "flat_line";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_electrical_conductivity status_flag";
String units "1";
}
qartod_conductivity_gross_range_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_electrical_conductivity";
String non_null_count "166023";
String qartod_test "gross_range";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
Int32 sensor_span 0, 7;
String standard_name "sea_water_electrical_conductivity status_flag";
String units "1";
}
qartod_conductivity_primary_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod_primary";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_electrical_conductivity";
String non_null_count "165948";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_electrical_conductivity status_flag";
String units "1";
}
qartod_conductivity_rate_of_change_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_electrical_conductivity";
String non_null_count "166023";
String qartod_test "rate_of_change";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_electrical_conductivity status_flag";
Float64 thresh_val 0.0;
String units "1";
}
qartod_conductivity_spike_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_electrical_conductivity";
String non_null_count "165948";
String qartod_test "spike";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_electrical_conductivity status_flag";
String units "1";
}
qartod_density_flat_line_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_density";
String non_null_count "0";
String qartod_test "flat_line";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_density status_flag";
String units "1";
}
qartod_density_gross_range_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_density";
String non_null_count "0";
String qartod_test "gross_range";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_density status_flag";
String units "1";
}
qartod_density_primary_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod_primary";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_density";
String non_null_count "0";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_density status_flag";
String units "1";
}
qartod_density_rate_of_change_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_density";
String non_null_count "0";
String qartod_test "rate_of_change";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_density status_flag";
String units "1";
}
qartod_density_spike_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_density";
String non_null_count "0";
String qartod_test "spike";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_density status_flag";
String units "1";
}
qartod_monotonic_pressure_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Pressure Test for sea_water_pressure";
String non_null_count "165792";
String qartod_test "pressure";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_pressure status_flag";
String units "1";
}
qartod_pressure_flat_line_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
Float64 eps 1.1920929e-7;
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Int32 high_reps 8;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_pressure";
Int32 low_reps 4;
String non_null_count "165792";
String qartod_test "flat_line";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_pressure status_flag";
String units "1";
}
qartod_pressure_gross_range_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_pressure";
String non_null_count "165792";
String qartod_test "gross_range";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
Int32 sensor_span 0, 11000;
String standard_name "sea_water_pressure status_flag";
String units "1";
}
qartod_pressure_primary_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod_primary";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_pressure";
String non_null_count "165792";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_pressure status_flag";
String units "1";
}
qartod_pressure_rate_of_change_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 2;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_pressure";
String non_null_count "165792";
String qartod_test "rate_of_change";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_pressure status_flag";
Float64 thresh_val 9.882504606292375;
String units "1";
}
qartod_pressure_spike_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Float64 high_thresh 14.48057014469926;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_pressure";
Float64 low_thresh 7.24028507234963;
String non_null_count "165792";
String qartod_test "spike";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_pressure status_flag";
String units "1";
}
qartod_salinity_flat_line_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
Float64 eps 1.1920929e-7;
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Int32 high_reps 8;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_practical_salinity";
Int32 low_reps 4;
String non_null_count "166023";
String qartod_test "flat_line";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_practical_salinity status_flag";
String units "1";
}
qartod_salinity_gross_range_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_practical_salinity";
String non_null_count "166023";
String qartod_test "gross_range";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
Int32 sensor_span 0, 50;
String standard_name "sea_water_practical_salinity status_flag";
String units "1";
}
qartod_salinity_primary_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod_primary";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_practical_salinity";
String non_null_count "166023";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_practical_salinity status_flag";
String units "1";
}
qartod_salinity_rate_of_change_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_practical_salinity";
String non_null_count "166023";
String qartod_test "rate_of_change";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_practical_salinity status_flag";
Float64 thresh_val 1.081866405920252e-5;
String units "1";
}
qartod_salinity_spike_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Float64 high_thresh 1.5852299596346287e-5;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_practical_salinity";
Float64 low_thresh 7.926149798173144e-6;
String non_null_count "166023";
String qartod_test "spike";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_practical_salinity status_flag";
String units "1";
}
qartod_temperature_flat_line_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
Float64 eps 1.1920929e-7;
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Int32 high_reps 8;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_temperature";
Int32 low_reps 4;
String non_null_count "166023";
String qartod_test "flat_line";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_temperature status_flag";
String units "1";
}
qartod_temperature_gross_range_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 1;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_temperature";
String non_null_count "166023";
String qartod_test "gross_range";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
Float64 sensor_span -5.0, 45.0;
String standard_name "sea_water_temperature status_flag";
String units "1";
}
qartod_temperature_primary_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod_primary";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_temperature";
String non_null_count "166023";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_temperature status_flag";
String units "1";
}
qartod_temperature_rate_of_change_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 3;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_temperature";
String non_null_count "166023";
String qartod_test "rate_of_change";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_temperature status_flag";
Float64 thresh_val 0.005699830382338451;
String units "1";
}
qartod_temperature_spike_flag {
Int32 _ChunkSizes 166;
Byte _FillValue 9;
String _Unsigned "false";
Byte actual_range 1, 4;
String coordinates "time latitude longitude depth";
String dac_comment "ioos_qartod";
String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
String flag_values "[1, 2, 3, 4, 9]";
Float64 high_thresh 0.00835180927836727;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_temperature";
Float64 low_thresh 0.004175904639183635;
String non_null_count "166023";
String qartod_test "spike";
String references "http://gliders.ioos.us/static/pdf/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "sea_water_temperature status_flag";
String units "1";
}
rowSize {
String ioos_category "Identifier";
String long_name "Number of Observations for this Profile";
String non_null_count "0";
}
salinity {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float32 actual_range 0.04583361, 0.05223595;
String ancillary_variables " qartod_salinity_flat_line_flag qartod_salinity_gross_range_flag qartod_salinity_rate_of_change_flag qartod_salinity_spike_flag qartod_salinity_primary_flag";
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 30.0;
String coordinates "time latitude longitude depth";
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "Sea Water Practical Salinity";
String non_null_count "166023";
String observation_type "calculated";
String parameter_id "50";
String platform "platform";
String standard_name "sea_water_practical_salinity";
String unit_id "3";
String units "1";
Float32 valid_max 40.0;
Float32 valid_min 0.0;
}
sci_flbbcd_bb_units {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range 9.11774e-4, 0.00577977;
Int32 bytes 4;
String comment "700 nm";
String coordinates "time latitude longitude depth";
String coverage_content_type "physicalMeasurement";
String ioos_category "Other";
String long_name "sci_flbbcd_bb_units";
String non_null_count "288364";
String sensor "sci_flbbcd_bb_units";
String source_sensor "sci_flbbcd_bb_units";
String standard_name "volume_scattering_function_of_radiative_flux_in_sea_water";
String type "f4";
String units "nodim";
Float64 valid_max 0.025;
Float64 valid_min 0.0;
}
sci_flbbcd_cdom_units {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range -0.1824, 13.5888;
Int32 bytes 4;
String coordinates "time latitude longitude depth";
String coverage_content_type "physicalMeasurement";
String ioos_category "Other";
String long_name "sci_flbbcd_cdom_units";
String non_null_count "288346";
String parameter_id "360";
String sensor "sci_flbbcd_cdom_units";
String source_sensor "sci_flbbcd_cdom_units";
String standard_name "concentration_of_colored_dissolved_organic_matter_in_sea_water_expressed_as_equivalent_mass_fraction_of_quinine_sulfate_dihydrate";
String type "f4";
String unit_id "58";
String units "1e-9";
Float64 valid_max 400.0;
Float64 valid_min 0.0;
}
sci_flbbcd_chlor_units {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range 6.569999999999997e-8, 3.299599999999999e-6;
Int32 bytes 4;
String coordinates "time latitude longitude depth";
String coverage_content_type "physicalMeasurement";
String ioos_category "Other";
String long_name "sci_flbbcd_chlor_units";
String non_null_count "288364";
String parameter_id "427";
String sensor "sci_flbbcd_chlor_units";
String source_sensor "sci_flbbcd_chlor_units";
String standard_name "mass_concentration_of_chlorophyll_a_in_sea_water";
String type "f4";
String unit_id "17";
String units "kg.m-3";
Float64 valid_max 100.0;
Float64 valid_min 0.0;
}
sci_oxy4_oxygen {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float32 actual_range 272.243, 304.35;
Int32 bytes 4;
String coordinates "time latitude longitude depth";
String ioos_category "Other";
String long_name "sci_oxy4_oxygen";
String non_null_count "165351";
String sensor "sci_oxy4_oxygen";
String source_sensor "sci_oxy4_oxygen";
String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
String type "f4";
String units "uM";
}
sci_oxy4_saturation {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Float64 actual_range 85.082, 90.583;
Int32 bytes 4;
String coordinates "time latitude longitude depth";
String ioos_category "Other";
String long_name "sci_oxy4_saturation";
String non_null_count "165351";
String parameter_id "80";
String sensor "sci_oxy4_saturation";
String source_sensor "sci_oxy4_saturation";
String standard_name "fractional_saturation_of_oxygen_in_sea_water";
String type "f4";
String unit_id "1";
String units "%";
}
source_file {
Int32 _ChunkSizes 35;
String _Unsigned "false";
String all_sensors "0";
String comment "Name of the source data file and associated file metadata";
String coordinates "time latitude longitude depth";
String dbd_label "DBD_ASC(dinkum_binary_data_ascii)file";
String encoding_ver "2";
Int32 file_size_bytes 7856637;
String filename "nokomis-2018-129-8-31-sf";
String filename_extension "dbd";
String filename_label "nokomis-2018-129-8-31-dbd(01970031)";
String fileopen_time "Mon_May_14_01:18:25_2018";
String ioos_category "Other";
String long_name "Source data file";
String mission_name "NDEP1Y18.MI";
String non_null_count "0";
String num_ascii_tags "14";
String num_label_lines "3";
String num_segments "1";
String segment_filename_0 "nokomis-2018-129-8-31";
String sensors_per_cycle "64";
String source_file "/home/localuser/gncutils/tests/n2018dep1/data/in/ascii/deba/nokomis-2018-129-8-31.deba";
String the8x3_filename "01970031";
}
temperature {
Int32 _ChunkSizes 166;
Float32 _FillValue NaN;
Float64 accuracy 0.004;
Float32 actual_range 1.459, 6.2869;
String ancillary_variables " qartod_temperature_flat_line_flag qartod_temperature_gross_range_flag qartod_temperature_rate_of_change_flag qartod_temperature_spike_flag qartod_temperature_primary_flag";
Int32 bytes 4;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String coordinates "time latitude longitude depth";
String coverage_content_type "physicalMeasurement";
String instrument "instrument_ctd";
String ioos_category "Temperature";
String long_name "Sea Water Temperature";
String non_null_count "166023";
String observation_type "measured";
String parameter_id "41";
String platform "platform";
Float64 precision 0.001;
Float64 resolution 0.001;
String sensor "sci_water_temp";
String source_sensor "sci_water_temp";
String standard_name "sea_water_temperature";
String unit_id "8";
String units "degree_Celsius";
Float32 valid_max 40.0;
Float32 valid_min -5.0;
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.5259766759625294e+9, 1.5263210647864194e+9;
String axis "T";
String calendar "gregorian";
String comment "Timestamp corresponding to the mid-point of the profile.";
String ioos_category "Time";
String long_name "Profile Time";
String non_null_count "369282";
String observation_type "calculated";
String platform "platform";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
Float64 valid_max 2.147483647e+9;
Float64 valid_min 0.0;
}
time_uv {
String ioos_category "Time";
String long_name "Depth-averaged Time";
String non_null_count "0";
}
trajectory {
Int32 _ChunkSizes 21;
String _Unsigned "false";
String cf_role "trajectory_id";
String comment "A trajectory is one deployment of a glider.";
String ioos_category "Identifier";
String long_name "Trajectory Name";
String non_null_count "369282";
}
trajectoryIndex {
String ioos_category "Identifier";
String long_name "The trajectory to which this profile is associated.";
String non_null_count "0";
}
u {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Int32 bytes 4;
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String coordinates "lon_uv lat_uv time_uv";
String ioos_category "Currents";
String long_name "Depth-averaged Eastward Sea Water Velocity";
String non_null_count "0";
String observation_type "calculated";
String platform "platform";
String precision "0.01";
String resolution "0.01";
String sensor "m_water_vx";
String source_sensor "m_water_vx";
String standard_name "eastward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 2.0;
Float64 valid_min -2.0;
}
v {
Int32 _ChunkSizes 166;
Float64 _FillValue NaN;
Int32 bytes 4;
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String coordinates "lon_uv lat_uv time_uv";
String ioos_category "Currents";
String long_name "Depth-averaged Northward Sea Water Velocity";
String non_null_count "0";
String observation_type "calculated";
String platform "platform";
String precision "0.01";
String resolution "0.01";
String sensor "m_water_vy";
String source_sensor "m_water_vy";
String standard_name "northward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 2.0;
Float64 valid_min -2.0;
}
wmo_id {
String _Unsigned "false";
String ioos_category "Identifier";
String long_name "WMO ID";
String non_null_count "0";
}
}
NC_GLOBAL {
String acknowledgment "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String cdm_data_type "TrajectoryProfile";
String cdm_profile_variables "profile_id, time, latitude, longitude, lat_uv, lon_uv, time_uv, u, v";
String cdm_trajectory_variables "trajectory, wmo_id";
String contributor_name "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String contributor_role "observation collection and processing";
String Conventions "Unidata Dataset Discovery v1.0, COARDS, CF-1.10";
String creator_email "Hollenhorst.Tom@epa.gov";
String creator_institution "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String creator_name "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String creator_type "institution";
String creator_url "https://www.epa.gov/aboutepa/about-great-lakes-toxicology-and-ecology-division";
String date_created "2020-05-19T19:01:07Z";
String date_issued "2020-05-19T19:01:07Z";
String date_modified "2020-05-19T19:01:07Z";
String deployment_name "nokomis_20180510T1824";
Float64 Easternmost_Easting -91.70309588121401;
String featureType "TrajectoryProfile";
String format_version "IOOS_Glider_NetCDF_v2.0.nc";
String geospatial_bounds "POLYGON ((-91.70429833333334 46.74148, -91.70444000000001 46.74148166666667, -91.70579166666667 46.741545, -91.825175 46.80199, -91.92685166666666 46.859855, -91.92881393926977 46.86099313903303, -91.92891499999999 46.861225, -91.81829166666667 46.90905333333333, -91.81827999999999 46.90905833333333, -91.81794833333333 46.90904, -91.80741000000002 46.900055, -91.79850833333333 46.88842333333334, -91.73596333333334 46.80577333333334, -91.72838833333331 46.79214333333333, -91.70641166666668 46.75026500000001, -91.70641058005403 46.75026282677474, -91.70640978702703 46.75026124072075, -91.70640886739538 46.75025940145746, -91.70640833333333 46.75025833333334, -91.70298 46.74210666666666, -91.70299254916489 46.74209690620509, -91.70299500000002 46.742095, -91.70304166666668 46.74206000000001, -91.70307166666667 46.74203833333333, -91.70429833333334 46.74148))";
String geospatial_bounds_crs "EPSG:4326";
String geospatial_bounds_vertical_crs "EPSG:5831";
Float64 geospatial_lat_max 46.90836128930199;
Float64 geospatial_lat_min 46.74154095845944;
String geospatial_lat_resolution "0.00001 degree";
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -91.70309588121401;
Float64 geospatial_lon_min -91.9284393978841;
String geospatial_lon_resolution "0.00001 degree";
String geospatial_lon_units "degrees_east";
Int32 geospatial_verical_resolution 0;
Float64 geospatial_vertical_max 123.5893;
Float64 geospatial_vertical_min -0.05950263;
String geospatial_vertical_positive "down";
String geospatial_vertical_resolution "varies";
String geospatial_vertical_units "m";
String gts_ingest "true";
String history
"2020-05-19T19:01:07Z: /tmp/tmpm5n3953k/nokomis_20180514T014656Z_dbddqq9sus9.nc created
2020-05-19T19:01:07Z: ./scripts/dba_to_profile_nc.py /home/localuser/gncutils/tests/n2018dep1/data/in/ascii/deba/nokomis-2018-129-8-31.deba
2025-08-01T12:30:18Z (local files)
2025-08-01T12:30:18Z http://gliders.ioos.us/erddap/tabledap/nokomis-20180510T1824-delayed.ncCF
2025-08-18T22:32:09Z https://files.stage.platforms.axds.co/ioos/gliderdac/nokomis-20180510T1824-delayed/processed.nc
2025-08-18T22:32:09Z http://erddap.sensors.ioos.us/erddap/tabledap/ioos-gliderdac-nokomis-20180510T1824-delayed.html";
String id "nokomis-20180510T1824-delayed";
String infoUrl "https://portal.axds.co/#platform/02d53c36-2b23-5f05-aeaa-1fab026ddbc6/v2";
String institution "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String instrument "In Situ/Laboratory Instruments > Profilers/Sounders > CTD > FLBBCD > Optode";
String instrument_vocabulary "NASA/GCMD Instrument Keywords Version 8.5";
String ioos_dac_checksum "adced0ff699a89d6f6a7e4862eb0c4e6";
String ioos_dac_completed "True";
String ioos_regional_association "GLOS";
String keywords "AUVS > Autonomous Underwater Vehicles, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Density, Earth Science > Oceans > Salinity/Density > Salinity, glider, In Situ Ocean-based platforms > Seaglider, Slocum, Spray, trajectory, underwater glider, water, wmo";
String keywords_vocabulary "GCMD Science Keywords";
String license "This data may be redistributed and used without restriction. Data provided as is with no expressed or implied assurance of quality assurance or quality control";
String Metadata_Conventions "Unidata Dataset Discovery v1.0, COARDS, CF-1.6";
String metadata_link "https://data.ioos.us/gliders/erddap/info/nokomis-20180510T1824-delayed/index.html";
String naming_authority "gov.noaa.ncei";
String ncei_template_version "NCEI_NetCDF_Trajectory_Template_v2.0";
Float64 Northernmost_Northing 46.90836128930199;
String packrat_source "ioos.gliderdac.gliderdac";
String packrat_source_id "nokomis-20180510T1824-delayed";
String packrat_uuid "02d53c36-2b23-5f05-aeaa-1fab026ddbc6";
String platform "In Situ Ocean-based Platforms > AUVS > Autonomous Underwater Vehicles";
String platform_category "glider";
String platform_groups "9d5b77de-b127-462a-b250-d3768beb612e";
String platform_type "Slocum Glider";
String platform_vocabulary "NASA/GCMD Platforms Keywords Version 8.5";
String processing_level "Level 0";
String product_version "0.0";
String project "CSMI";
String publisher_email "Hollenhorst.Tom@epa.gov";
String publisher_institution "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String publisher_name "US EPA Great Lakes Toxicology and Ecology Division; US EPA Great Lakes National Program Office";
String publisher_url "https://www.epa.gov/aboutepa/about-great-lakes-toxicology-and-ecology-division";
String references "https://www.epa.gov/aboutepa/about-great-lakes-toxicology-and-ecology-division";
String sea_name "Great Lakes";
String source "Observational data from a profiling glider.";
String sourceUrl "https://files.stage.platforms.axds.co/ioos/gliderdac/nokomis-20180510T1824-delayed/processed.nc";
Float64 Southernmost_Northing 46.74154095845944;
String standard_name_vocabulary "CF Standard Name Table v27";
String subsetVariables "wmo_id,trajectory,profile_id,time,latitude,longitude";
String summary "Slocum glider data were collected in western Lake Superior to examine nearshore to offshore gradients. The glider collected vertical profiles of conductivity, temperature, depth, chlorophyll, colored dissolved organic matter (CDOM), backscatter, and dissolved oxygen.";
String time_coverage_duration "PT02M27.54984S";
String time_coverage_end "2018-05-14T18:04:24Z";
String time_coverage_resolution "PTS";
String time_coverage_start "2018-05-10T18:24:35Z";
String title "IOOS Glider - CSMI - nokomis-20180510T1824-delayed";
String uuid "8951fe7b-e9a9-41a3-84e9-733f24297a64";
String vessel_name "nokomis";
String vessel_type "Slocum Glider";
Float64 Westernmost_Easting -91.9284393978841;
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.