| Code P01 | Parameter | Unit |
| CPHLZZXX | Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] | Milligrams per cubic metre |
| CTPPCVXX | Carbon biomass of phytoplankton per unit volume of the water body by optical microscopy and abundance to carbon conversion | Milligrams per cubic metre |
| 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 |
| PTAXZZXX | Concentration of phaeophytin-a {pheophytin-a CAS 603-17-8} per unit volume of the water body [particulate >unknown phase] | Milligrams per cubic metre |
| PU00M00Z | Abundance of phytoplankton per unit volume of the water body by optical microscopy | Number per litre |
| SIGTEQST | Sigma-T of the water body by computation from salinity and temperature using UNESCO algorithm | Kilograms per cubic metre |
| TBBMXXXX | Carbon biomass of Bacteria (ITIS: 202421: WoRMS 6) per unit volume of the water body | Milligrams per cubic metre |
| TBCCXXXX | Abundance of Bacteria (ITIS: 202421: WoRMS 6) per unit volume of the water body | Number per litre |
| TCUPDZZZ | Uptake rate (daily) of carbon {primary production CAS 7440-44-0} per unit time per unit volume of the water body [particulate >unknown phase] | Milligrams per cubic metre per hour |
| TEMPPR01 | Temperature of the water body | Degrees Celsius |
