| Parameter | Description | Units |
| event | unique sampling event number composite of UTC(GMT) date and time | YYYYMMDDhhmm |
| sta | station number | dimensionless |
| cast_type | CTD=CTD rosette bottle cast | dimensionless |
| date | start date of event (GMT) | YYYYMMDD |
| date_end | end date of event (GMT) | YYYYMMDD |
| DOY_1 | day of year | YYYY.fraction |
| DOY_2 | day of year | DDD.fraction |
| time_start | start time of event (GMT) | hhmm |
| time_end | end time of event (GMT) | hhmm |
| lat | latitude, negative denotes South recorded at start of cast | decimal degrees |
| lat_end | latitude, at end of cast | decimal degrees |
| lon | longitude, negative denotes West recorded at start of cast | decimal degrees |
| lon_end | longitude, at end of cast | decimal degrees |
| activity_and_comments | concatenated string: cruise_ID, sampling method, and 2 digit station | dimensionless |
| time | start time of event (GMT) | hhmm |
| Pmax_n | pressure, nominal, maximum for station | decibars |
| sta_ref | reference station indicator | dimensionless |
| sampling_code | sampling code for event concatenated string: cruise_ID, sampling method, 2 digit sta num, sta_ref and sampling type - where BCT = Bats, Carlson and Thorium | dimensionless |
| comments | comments, station location descriptor relative to eddy center | dimensionless |