pastas.stats.dutch.q_gvg#

pastas.stats.dutch.q_gvg(series: pandas.Series, tmin: pandas.Timestamp | str | None = None, tmax: pandas.Timestamp | str | None = None, by_year: bool = True) → pandas.Series#

Gemiddeld Voorjaarsgrondwaterstand (GVG) also called MSGL (Mean Spring GW Level).

Parameters:

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

  • tmin (pandas.Timestamp or str, optional) – A string or pandas.Timestamp with the start and end dates for the period (E.g. ‘1980-01-01 00:00:00’ and ‘2020-01-01 00:00:00’).

  • tmax (pandas.Timestamp or str, optional) – A string or pandas.Timestamp with the start and end dates for the period (E.g. ‘1980-01-01 00:00:00’ and ‘2020-01-01 00:00:00’).

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

Notes

Approximated by taking the median of the values in the period between 14 March and 15 April (after resampling to daily values). This function does not care about series length!