q_ghg(series, tmin=None, tmax=None, q=0.94, by_year=True)[source]#

Gemiddeld Hoogste Grondwaterstand (GHG) also called MHGL (Mean High Groundwater Level).

  • series (pandas.Series) – Series to calculate the GHG for.

  • tmin (pandas.Timestamp, optional) –

  • tmax (pandas.Timestamp, optional) –

  • q (float, optional) – quantile fraction of exceedance (default 0.94)

  • by_year (bool, optional) – Take average over quantiles per year (default True)


Approximated by taking quantiles of the timeseries values per year and calculating the mean of the quantiles. The series is first resampled to daily values.