Explanations

Minimum value of salinity during a complete tidal cycle (period between two subsequent slack water times of ebb current).

left top: value of characteristic number for a single event.
left bottom: mean value of the characteristic number within the period of data analysis.
right top: maximum value of the characteristic number within the period of data analysis.
right bottom: minimum value of the characteristic number within the period of data analysis.

Examples

minimum salinity	minimum salinity (maximum)

minimum salinity (mean)	minimum salinity (minimum)