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When interested in a smaller period, this can be chosen by changing the start and end dates in the selection boxes:
The threshold value field can be filled and will be used when calculating the percentage of values above or below a threshold. This is shown below where also the interval year is chosen:
Multiple statistics can be selected at once, this will result in multiple rows per time serie. This is shown below for just 1 time serie, where the minimum, maximum and mean are chosen: