| Code P01 | Parameter | Unit |
| AMONZZXX | Concentration of ammonium {NH4+ CAS 14798-03-9} per unit volume of the water body [unknown phase] | Micromoles per litre |
| CPHLZZXX | Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] | Micrograms per litre |
| DOXYWITX | Concentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] by Winkler titration | Micromoles per litre |
| DOXYWITX | Concentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] by Winkler titration | Millilitres per litre |
| NTRAKGTX | Concentration of nitrate {NO3- CAS 14797-55-8} per unit mass of the water body [dissolved plus reactive particulate phase] by colorimetric autoanalysis and correction for nitrite | Micromoles per litre |
| NTRIYYDZ | Concentration of nitrite {NO2- CAS 14797-65-0} per unit volume of the water body [dissolved plus reactive particulate phase] | Micromoles per litre |
| OXYSZZ01 | Saturation of oxygen {O2 CAS 7782-44-7} in the water body [dissolved plus reactive particulate phase] | Percent |
| PHOSAA01 | Concentration of phosphate {PO43- CAS 14265-44-2} per unit volume of the water body [dissolved plus reactive particulate <1um phase] by filtration and colorimetric autoanalysis | Micromoles per litre |
| 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 |
| SECCSDNX | Visibility in the water body by Secchi disk | Metres |
| SLCAAATX | Concentration of silicate {SiO44- CAS 17181-37-2} per unit volume of the water body [dissolved plus reactive particulate phase] by colorimetric autoanalysis | Micromoles per litre |
| TEMPPR01 | Temperature of the water body | Degrees Celsius |
| TPHSZZXX | Concentration of total phosphorus {P CAS 7723-14-0} per unit volume of the water body [dissolved plus reactive particulate phase] | Micromoles per litre |
