Explanations

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.

Remark: The mean value is only computed at locations where all events have occurred within the period of data analysis.

Examples

flood tide rise	flood tide rise (maximum)

flood tide rise (mean value)	flood tide rise (minimum)