Data columns documentation:

Year
Calendar year of sampling
Variable Type: Numeric (integer)

Batch
Analytical Batch
Variable Type: Character

SmpNum
Sample identification number
Variable Type: Character

OffShr
Sampling location offshore (salinity>34.5 ‰, "O") or coastal (salinity ≤ 34.5 ‰, "C")
Variable Type: Character Lookup (O or C)

decLong
Longitude of sampling location (decimal format)
Variable Type: Numeric (3 decimal places)

decLat
Latitude of sampling location (decimal format)
Variable Type: Numeric (3 decimal places)

MidEst
Easting of sampling location (km)
Variable Type: Numeric (7 decimal places)

MidNrth
Northing of sampling location (km)
Variable Type: Numeric (7 decimal places)

ToxNSalNrm
Total Oxidised Nitrogen (µM) Salinity Normalised. Coastal waters normalised to salinity of 32.0
Variable Type: Numeric (2 decimal places)

DIP
Dissolved inorganic Phosphorus (µM)
Variable Type: Numeric (2 decimal places)

DSi
Dissolved Silicate (µM)
Variable Type: Numeric (2 decimal places)

NP
Total Oxidised Nitrogen:Dissolved Inorganic Phosphorus (ratio)
Variable Type: Numeric (3 decimal places)

NS
Total Oxidised Nitrogen:Dissolved Silicate (ratio)
Variable Type: Numeric (3 decimal places)

DatNum
Datum number - for analysis ensure this variable is in ascending order
Variable Tpye: Numeric (integer)