pastas.stats.dutch.gg

gg(series, tmin=None, tmax=None, fill_method='nearest', limit=0, output='mean', min_n_meas=16, min_n_years=8, year_offset='YE-MAR')

Calculate the ‘Gemiddelde Grondwaterstand’ (Average Groundwater Level).

Parameters

• series (pandas.Series with a DatetimeIndex) – The pandas Series of which the statistic is determined.

• tmin (pandas.Timestamp, optional) – The lowest index to take into account.

• tmax (pandas.Timestamp, optional) – The highest index to take into account.

• fill_method (str, optional) – see .. :mod: pastas.stats.dutch._gxg

• limit (int or None, optional) – Maximum number of days to fill using fill method, use None to fill nothing.

• output (str, optional) – output type * ‘mean’ (default) : for mean of yearly values. * ‘yearly’: for series of yearly values. * ‘g3’: for series with selected data for calculating statistic. * ‘semimonthly’: for series with all data points (14th, 28th of each month).

• min_n_meas (int, optional) – Minimum number of measurements per year (at maximum 24).

• min_n_years (int, optional) – Minimum number of years.

• year_offset (resampling offset. Use "YE" for calendar years (jan 1 to dec 31) and) –

• 31). ('YE-MAR' for hydrological years (apr 1 to mar) –

Returns

series of yearly values or mean of yearly values.

Return type

pd.Series or scalar

Notes

Classic method resampling the series to every 14th and 28th of the month.