| Code P01 | Parameter | Unit |
| HECNMASS | Concentration of helium {He CAS 7440-59-7} per unit mass of the water body [dissolved plus reactive particulate phase] | Nanomoles per kilogram |
| MXTX3H1H | Atomic ratio of tritium/hydrogen in the water body [dissolved plus reactive particulate phase] by mass spectrometry | Tritium units (10**18H/Tr) |
| NECNMASS | Concentration of neon {Ne CAS 7440-01-9} per unit mass of the water body [dissolved plus reactive particulate phase] | Nanomoles per kilogram |
| PRESPR01 | Pressure (spatial co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level | Decibars |
| S3HHMXTX | Atomic ratio standard error of tritium/hydrogen in the water body [dissolved plus reactive particulate phase] by mass spectrometry | Tritium units (10**18H/Tr) |
| SDD3HEXX | Enrichment standard deviation of helium-3 {3He CAS 14762-55-1} in the water body [dissolved plus reactive particulate phase] by mass spectrometry | Percent |
