| Code P01 | Parameter | Unit |
| ACO2CV01 | Concentration (volume per volume) of carbon dioxide {CO2 CAS 124-38-9} per unit volume of cave atmosphere by carbon dioxide probe | Parts per million by volume |
| CAPHZZ01 | Pressure (measured variable) exerted by the atmosphere | Millibars |
| FCO2WTAT | Fugacity of carbon dioxide (at 100% humidity) {CAS 124-38-9} in the atmosphere | Microatmospheres |
| PCO2VA01 | Partial pressure of carbon dioxide {CO2 CAS 124-38-9} in the atmosphere by carbon dioxide probe | Microatmospheres |
| PRESPR01 | Pressure (spatial co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level | Decibars |
| PSALZZXX | Practical salinity of the water body by computation using UNESCO 1983 algorithm | Parts per thousand |
| TCO2MSXX | Concentration of carbon (total inorganic) {TCO2 CAS 7440-44-0} per unit mass of the water body [dissolved plus reactive particulate phase] | Parts per million by volume |
| TEMPPR01 | Temperature of the water body | Degrees Celsius |
