ERDDAP > tabledap > Make A Graph

Dataset Title:	10.5066-P9Z0Z8DM - 11511Dexo-a
Institution:	Coastal and Marine Hazards and Resources Program, U.S. Geological Survey   (Dataset ID: 10_5066_P9Z0Z8DM_11511Dexo_a_nc)
Range:	longitude = -74.78279 to -74.78279°E, latitude = 39.03161 to 39.03161°N, time = 2022-09-28T20:30:00Z to 2022-12-06T17:15:00Z
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Data Access Form | Files

 

Graph Type:  lines linesAndMarkers markers sticks vectors X Axis:  time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m Y Axis:  time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m Color:  time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m   Constraints Optional Constraint #1 Optional Constraint #2 station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m     != =~ <= >= = < >     != =~ <= >= = < >     station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m     != =~ <= >= = < >     != =~ <= >= = < >     station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m     != =~ <= >= = < >     != =~ <= >= = < >     station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m     != =~ <= >= = < >     != =~ <= >= = < >     station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m     != =~ <= >= = < >     != =~ <= >= = < >       Server-side Functions  distinct() orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m station_id time CHLrfu Fch_906 C_51 fDOMQSU fDOMRFU OST_62 DO S_41 SpC_48 TALPErfu TALPE Turb pH_159 T_28 Bat_106 P_1 P_1ac latitude longitude z depth_m ")   Graph Settings Marker Type:  None Plus X Dot Square Filled Square Circle Filled Circle Up Triangle Filled Up Triangle Borderless Filled Square Borderless Filled Circle Borderless Filled Up Triangle  Size:  3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Color:  Color Bar:  BlackBlueWhite BlackGreenWhite BlackRedWhite BlackWhite BlueWhiteRed BlueWideWhiteRed LightRainbow Ocean OceanDepth Rainbow Rainbow2 Rainfall ReverseRainbow RedWhiteBlue RedWhiteBlue2 RedWideWhiteBlue Spectrum Topography TopographyDepth WhiteBlueBlack WhiteGreenBlack WhiteRedBlack WhiteBlack YellowRed KT_algae KT_amp KT_balance KT_curl KT_deep KT_delta KT_dense KT_gray KT_haline KT_ice KT_matter KT_oxy KT_phase KT_solar KT_speed KT_tempo KT_thermal KT_turbid  Continuity:  Continuous Discrete  Scale:  Linear Log    Minimum:   Maximum:   N Sections:  2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Draw land mask:  under over outline off Y Axis Minimum:   Maximum:    Ascending Descending Linear Log   Redraw the Graph (Please be patient. It may take a while to get the data.)   Optional: Then set the File Type: .asc .csv .csvp .csv0 .dataTable .das .dds .dods .esriCsv .fgdc .geoJson .graph .help .html .htmlTable .iso19115 .itx .json .jsonlCSV1 .jsonlCSV .jsonlKVP .mat .nc .ncHeader .ncCF .ncCFHeader .ncCFMA .ncCFMAHeader .nccsv .nccsvMetadata .ncoJson .odvTxt .subset .tsv .tsvp .tsv0 .wav .xhtml .kml .smallPdf .pdf .largePdf .smallPng .png .largePng .transparentPng (File Type information) and or view the URL: (Documentation / Bypass this form )

Click on the map to specify a new center point. Zoom:  Time range:  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 second(s) minute(s) hour(s) day(s) month(s) year(s)

 

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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

• Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
• Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.
   

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  station_id {
    String actual_range 
"10_5066_P9Z0Z8DM_11511Dexo_a_nc
10_5066_P9Z0Z8DM_11511Dexo_a_nc";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  time {
    UInt32 _ChunkSizes 1024;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.664397e+9, 1.6703469e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "time (UTC)";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  CHLrfu {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 0.0, 3.4;
    String comments "Relative fluorescence units (RFU)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Chlorophyll A, RFU";
    Float64 maximum 3.4;
    Float64 minimum 0.0;
    String note 
"2023-12-12T16:08:35.916795+00:00: Values filled where difference between 5-point median filter and original values is greater than 2.25; 7 values affected. 
";
    String sensor_serial_number "14A103657";
    String units "percent";
  }
  Fch_906 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 0.13, 13.84;
    String comments "from calibration of sensor with rhodamine W/T in lab";
    Int32 epic_code 906;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Chlorophyll A";
    Float64 maximum 13.84;
    Float64 minimum 0.13;
    String note 
"2023-12-12T16:08:35.919762+00:00: Values filled where difference between 5-point median filter and original values is greater than 9.0; 7 values affected. 
";
    String sensor_serial_number "14A103657";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "ug/L";
  }
  C_51 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 2.75367, 4.617369999999999;
    Int32 epic_code 51;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Conductivity";
    Float64 maximum 4.617369999999999;
    Float64 minimum 2.75367;
    String note 
"2023-12-12T16:08:35.904791+00:00: Values filled where data decreases by more than -0.45 units in a single time step; 0 values affected. 
2023-12-12T16:08:35.904791+00:00: Values filled where data increases by more than 0.45 units in a single time step; 0 values affected. 
";
    String sensor_serial_number "16E102276";
    String standard_name "sea_water_electrical_conductivity";
    String units "S/m";
  }
  fDOMQSU {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 4.08, 44.8;
    String comments "Quinine sulfate units (QSU)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Fluorescent dissolved organic matter, QSU";
    Float64 maximum 44.8;
    Float64 minimum 4.08;
    String note 
"2023-12-12T16:08:35.914795+00:00: Values filled where difference between 5-point median filter and original values is greater than 20.0; 2 values affected. 
";
    String sensor_serial_number "17G102975";
    String units "1e-9";
  }
  fDOMRFU {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 1.4, 14.85;
    String comments "Relative fluorescence units (RFU)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Fluorescent dissolved organic matter, RFU";
    Float64 maximum 14.85;
    Float64 minimum 1.4;
    String note 
"2023-12-12T16:08:35.911793+00:00: Values filled where difference between 5-point median filter and original values is greater than 7.25; 2 values affected. 
";
    String sensor_serial_number "17G102975";
    String units "percent";
  }
  OST_62 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 47.4, 162.3;
    Int32 epic_code 62;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Oxygen percent saturation";
    Float64 maximum 162.3;
    Float64 minimum 47.4;
    String sensor_serial_number "17H101213";
    String standard_name "fractional_saturation_of_oxygen_in_sea_water";
    String units "percent";
  }
  DO {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 3.83, 12.72;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Dissolved oxygen";
    Float64 maximum 12.72;
    Float64 minimum 3.83;
    String sensor_serial_number "17H101213";
    String standard_name "mass_concentration_of_oxygen_in_sea_water";
    String units "mg/L";
  }
  S_41 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 22.99, 32.6;
    String comments "Practical salinity units (PSU)";
    Int32 epic_code 41;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Salinity, PSU";
    Float64 maximum 32.6;
    Float64 minimum 22.99;
    String note 
"2023-12-12T16:08:35.903794+00:00: Values filled where data decreases by more than -3.5 units in a single time step; 0 values affected. 
";
    String sensor_serial_number "16E102276";
    String standard_name "sea_water_practical_salinity";
    String units "1";
  }
  SpC_48 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 3.6393, 5.0063;
    String comment "Temperature compensated to 25 °C";
    Int32 epic_code 48;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Specific Conductivity";
    Float64 maximum 5.0063;
    Float64 minimum 3.6393;
    String note 
"2023-12-12T16:08:35.905805+00:00: Values filled where data decreases by more than -0.625 units in a single time step; 0 values affected. 
2023-12-12T16:08:35.905805+00:00: Values filled where data increases by more than 0.625 units in a single time step; 0 values affected. 
";
    String sensor_serial_number "16E102276";
    String units "S/m";
  }
  TALPErfu {
    UInt32 _ChunkSizes 509;
    Float64 actual_range -0.07, 11.2;
    String comments "Relative fluorescence units (RFU); formerly called BGAPErfu (Blue green algae phycoerythrin, RFU)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Total algae phycoerythrin, RFU";
    Float64 maximum 11.2;
    Float64 minimum -0.07;
    String note 
"2023-12-12T16:08:35.922797+00:00: Values filled where difference between 5-point median filter and original values is greater than 8.0; 3 values affected. 
";
    String sensor_serial_number "14A103657";
    String units "percent";
  }
  TALPE {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 0.02, 31.61;
    String comments "Formerly called BGAPE (Blue green algae phycoerythrin)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Total algae phycoerythrin";
    Float64 maximum 31.61;
    Float64 minimum 0.02;
    String note 
"2023-12-12T16:08:35.926794+00:00: Values filled where difference between 5-point median filter and original values is greater than 22.5; 3 values affected. 
";
    String sensor_serial_number "14A103657";
    String units "ug/L";
  }
  Turb {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 1.75, 71.95;
    String comments "Nephelometric turbidity units (NTU)";
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Turbidity, NTU";
    Float64 maximum 71.95;
    Float64 minimum 1.75;
    String note 
"2023-12-12T16:08:35.909794+00:00: Values filled where difference between 5-point median filter and original values is greater than 20.0; 15 values affected. 
";
    String sensor_serial_number "17H101220";
    String standard_name "sea_water_turbidity";
    String units "1";
  }
  pH_159 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 7.43, 8.39;
    Int32 epic_code 159;
    String FillValue "nan";
    String ioos_category "Other";
    Float64 maximum 8.39;
    Float64 minimum 7.43;
    String sensor_serial_number "13D101935";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "1";
  }
  T_28 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 3.523, 22.486;
    Int32 epic_code 28;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Temperature";
    Float64 maximum 22.486;
    Float64 minimum 3.523;
    String sensor_serial_number "16E102276";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  Bat_106 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 4.79, 5.95;
    Int32 epic_code 106;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Battery voltage";
    Float64 maximum 5.95;
    Float64 minimum 4.79;
    String units "V";
  }
  P_1 {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 10.38695594, 12.659468836;
    Int32 epic_code 1;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Uncorrected pressure";
    Float64 maximum 12.659468836;
    Float64 minimum 10.38695594;
    String sensor_serial_number "17G100332";
    String standard_name "sea_water_pressure";
    String units "dbar";
  }
  P_1ac {
    UInt32 _ChunkSizes 509;
    Float64 actual_range 0.2792473088000005, 2.4791703328000008;
    String FillValue "nan";
    String ioos_category "Other";
    String long_name "Corrected pressure";
    Float64 maximum 2.4791703328000008;
    Float64 minimum 0.2792473088000005;
    String note 
"2023-12-12T16:08:35.938797+00:00: Corrected for variations in atmospheric pressure using Cape May, NJ NOAA met station (ID: 8536110, located ~16 km from site). Missing atmospheric pressure data at station 8536110 was filled by data from NOAA stations Brandywine Shoal Light (ID: 8555889, located ~28 km from site) and Lewes, DE (ID: 8557380, located ~40 km from site). 
";
    String sensor_serial_number "17G100332";
    String standard_name "sea_water_pressure_due_to_sea_water";
    String units "dbar";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 39.031608, 39.031608;
    String axis "Y";
    Int32 epic_code 500;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -74.782792, -74.782792;
    String axis "X";
    Int32 epic_code 502;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  z {
    Float64 actual_range -1.04, -1.04;
    String axis "Z";
    String geopotential_datum_name "NAVD88";
    String ioos_category "Other";
    String long_name "height relative to NAVD88";
    String positive "up";
    String standard_name "height";
    String units "m";
  }
  depth_m {
    Float64 actual_range 1.0887562163801578, 1.0887562163801578;
    String ioos_category "Other";
    String long_name "depth below mean sea level";
    String positive "down";
    String standard_name "depth_below_geoid";
    String units "m";
  }
 }
  NC_GLOBAL {
    String atmospheric_pressure_correction_file "atmpres.cdf";
    Float64 atmospheric_pressure_correction_offset_applied 0.0012985031999992458;
    String basefile "NFWFSH1151D_17H103145_092822_100000";
    Float64 C_51_max_diff 0.45;
    Float64 C_51_min_diff -0.45;
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id";
    Float64 CHLrfu_med_diff 2.25;
    Int32 ClockDrift 0;
    Int32 ClockError 0;
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String COORD_SYSTEM "GEOGRAPHIC";
    String creator_url "https://www.usgs.gov";
    String DATA_ORIGIN "USGS WHCMSC Coastal and Estuarine Dynamics Group";
    String DATA_SUBTYPE "MOORED";
    Int32 DELTA_T 900;
    String Deployment_date "2022-09-28 20:22";
    Float64 DEPTH_CONST 0.0;
    String DESCRIPTION "Stone Harbor, New Jersey";
    Float64 DRIFTER 0.0;
    Float64 Easternmost_Easting -74.782792;
    String EXPERIMENT "NFWF - Hurricane Sandy Coastal Resiliency Program: Marsh Sediment Flux";
    String experiment_name "10.5066-P9Z0Z8DM";
    Float64 Fch_906_med_diff 9.0;
    Float64 fDOMQSU_med_diff 20.0;
    Float64 fDOMRFU_med_diff 7.25;
    String featureType "TimeSeries";
    String Field_Activity_Number "2018-048-FA, 2018-056-FA, 2018-059-FA, 2019-006-FA, 2019-016-FA, 2019-023-FA, 2019-028-FA, 2019-036-FA, 2022-013-FA, 2023-015-FA, 2023-016-FA";
    String filename "11511Dexo";
    String geopotential_datum_name "NAVD88";
    String geopotential_datum_note "Elevation at seabed using RTK";
    Float64 geospatial_lat_max 39.031608;
    Float64 geospatial_lat_min 39.031608;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -74.782792;
    Float64 geospatial_lon_min -74.782792;
    String geospatial_lon_units "degrees_east";
    Float64 height_above_geopotential_datum -1.34;
    String history 
"2023-12-12T16:08:32.731371+00:00: Processed using exo.py with stglib 0.7.0+67.ga44417f, xarray 2022.12.0, NumPy 1.24.1, netCDF4 1.6.2, Python 3.11.0.
2023-12-12T16:08:35.886796+00:00: Data clipped using Deployment_date of 2022-09-28 20:22 and Recovery_date of 2022-12-06 17:28.

2024-12-12T02:14:29Z (local files)
2024-12-12T02:14:29Z https://cmgds.marine.usgs.gov/tabledap/10_5066_P9Z0Z8DM_11511Dexo_a_nc.das";
    String infoUrl "https://cmgds.marine.usgs.gov/ocean-time-series/";
    Float64 initial_instrument_height 0.3;
    String initial_instrument_height_note "From seabed to pressure port (meters)";
    String institution "Coastal and Marine Hazards and Resources Program, U.S. Geological Survey";
    String institution_url "https://woodshole.er.usgs.gov";
    String instrument_type "YSI EXO2 Multiparameter Sonde";
    Float64 latitude 39.031608;
    String LatLonDatum "NAD83";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    Float64 longitude -74.782792;
    Float64 magnetic_variation -11.93;
    String MOORING "1151D";
    String NCProperties "version=2,netcdf=4.8.1,hdf5=1.12.2";
    Float64 nominal_instrument_depth 1.0879999999999999;
    Float64 Northernmost_Northing 39.031608;
    String P_1ac_note "Corrected for variations in atmospheric pressure using Cape May, NJ NOAA met station (ID: 8536110, located ~16 km from site). Missing atmospheric pressure data at station 8536110 was filled by data from NOAA stations Brandywine Shoal Light (ID: 8555889, located ~28 km from site) and Lewes, DE (ID: 8557380, located ~40 km from site).";
    String platform_type "Fence post mount";
    Float64 POS_CONST 0.0;
    String PROJECT "USGS Coastal and Marine Hazards and Resources Program";
    String publisher_url "https://www.usgs.gov";
    String Recovery_date "2022-12-06 17:28";
    Float64 s_41_max_diff 3.5;
    Float64 S_41_min_diff -3.5;
    String SciPi "N. Ganju";
    String serial_number "17H103145";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 39.031608;
    Float64 SpC_48_max_diff 0.625;
    Float64 SpC_48_min_diff -0.625;
    String start_time "2022-09-28T20:30:00.000000000";
    String stop_time "2022-12-06T17:15:00.000000000";
    String subsetVariables "station_id";
    String summary "10.5066-P9Z0Z8DM - 11511Dexo-a";
    Float64 TALPE_med_diff 22.5;
    Float64 TALPErfu_med_diff 8.0;
    String time_coverage_end "2022-12-06T17:15:00Z";
    String time_coverage_start "2022-09-28T20:30:00Z";
    String title "10.5066-P9Z0Z8DM - 11511Dexo-a";
    Float64 Turb_med_diff 20.0;
    Float64 VAR_FILL NaN;
    Float64 WATER_DEPTH 1.388;
    String WATER_DEPTH_NOTE "(meters), Mean water level from data";
    String WATER_MASS "Great Channel/Atlantic Ocean";
    Float64 Westernmost_Easting -74.782792;
    String zeroed_pressure "No";
  }
}

 

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Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP 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.

• (easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

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.