Table 2. Key to the data fields in the Saanich Inlet time-series CTD dataset.

Data field	Description	Units
Longitude	Unique geographical coordinates for sampling station	Decimal degrees followed by letter
Latitude	Unique geographical coordinates for sampling station	Decimal degrees followed by letter
Cruise number	Numerical identifier of individual cruises	Numeric string
Date	Year of cruise	Numeric string as YY-MM-DD
Cruise day	Day of cruise	Numeric string
Pressure	CTD pressure measurement in intervals of 1 meter	Decibars (db)
Temperature	CTD temperature measurement at each pressure point	Celsius degrees (°C)
Conductivity	CTD conductivity sensor measurement at each pressure point	Millisiemens per centimetre (mScm−1)
Fluorescence	CTD Wetstar fluorometer chlorophyll measurement at each pressure point	Chlorophyll concentration in milligram per cubic meter (mgm−3)
Beam transmission	CTD transmissometer measurement at each pressure point	Light transmission (%)
PAR/Irradiance	CTD Photosintentically active radiation (PAR) measurement at each pressure point	Irradiance
Oxygen SBE	CTD Dissolved oxygen sensor measurement at each pressure point	Volts (V)
Oxygen (μM)	Oxygen calculation based on CTD Oxygen SBE following this calculation: $\left[\mu \mathrm{mole}per\mathrm{Kg}\right]=\mathrm{SBE}*\times 44660/\left(\mathrm{sigma}-\mathrm{theta}+1000\right)$ where:—44660 constant for oxygen gas:—Sigma-theta is the density	Micromolar (μM)
Salinity	CTD salinity measurement at each pressure point	Practical salinity unit (PSU)
Density	CTD density measurement at each pressure point	Sigma-theta (q)