| Variable   | Optional Constraint #1
   | Optional Constraint #2
   | Minimum   or a List of Values
   | Maximum   
 | 
  | time (time of measurements, UTC)   |  |  |  |  | 2017-04-16T00:00:00Z | 2018-05-16T06:00:00Z | 
  |         |  | 
  | TIME_QC (quality flag)   |  |  |  |  |  | 
  | POSITION_QC (Position quality flag)   |  |  |  |  |  | 
  | depth (depth of measurements, m)   |  |  |  |  | -3.0 | 1000.0 | 
  |         |  | 
  | DEPTH_QC (quality flag)   |  |  |  |  |  | 
  | ATMS (hPa)   |  |  |  |  | 993.0 | 1032.5 | 
  | ATMS_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | DOX1 (Dissolved oxygen, ml l-1)   |  |  |  |  | -9.919 | 5.852 | 
  | DOX1_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | DRYT (degree_C)   |  |  |  |  | 8.1 | 30.2 | 
  | DRYT_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | FLU2 (mg m-3)   |  |  |  |  | -0.372 | 8.4227 | 
  | FLU2_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | GDIR (degree)   |  |  |  |  | 0.0 | 359.0 | 
  | GDIR_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | GSPD (Gust wind speed, m s-1)   |  |  |  |  | 0.38 | 23.2031 | 
  | GSPD_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | HCDT (degree)   |  |  |  |  | 0.0 | 359.648 | 
  | HCDT_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | HCSP (Horizontal current speed, m s-1)   |  |  |  |  | 0.0 | 0.782227 | 
  | HCSP_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | PRES (Sea pressure, decibar)   |  |  |  |  | 0.0 | 821.932 | 
  | PRES_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | PSAL (Practical salinity, 0.001)   |  |  |  |  | 35.0 | 39.5571 | 
  | PSAL_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | TEMP (Sea temperature, degree_C)   |  |  |  |  | 10.0 | 27.044 | 
  | TEMP_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | TUR4 (Turbidity, 1)   |  |  |  |  | -0.154 | 10.0 | 
  | TUR4_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | VHM0 (m)   |  |  |  |  | 0.0 | 6.875 | 
  | VHM0_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | VMDR (degree)   |  |  |  |  | 0.0 | 358.594 | 
  | VMDR_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | VTM02 (s)   |  |  |  |  | 0.0 | 8.55469 | 
  | VTM02_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | VTPK (s)   |  |  |  |  | 0.0 | 12.0703 | 
  | VTPK_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | VZMX (m)   |  |  |  |  | 0.0 | 10.0781 | 
  | VZMX_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | WDIR (degree)   |  |  |  |  | 0.0 | 359.0 | 
  | WDIR_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | WSPD (Horizontal wind speed, m s-1)   |  |  |  |  | 0.19 | 17.5781 | 
  | WSPD_QC (quality flag)   |  |  |  |  | 1 | 9 | 
  | preciseLat (degrees_north)   |  |  |  |  | 36.8172 | 36.8433 | 
  | preciseLon (degrees_east)   |  |  |  |  | 21.582 | 21.6113 | 
  | GPS_POSITION_QC (quality flag)   |  |  |  |  |  | 
  | station_name (Identifier, Not applicable)   |  |  |