pastas.stats.signatures.baselevel_index
=======================================

.. py:function:: pastas.stats.signatures.baselevel_index(series: pandas.Series, normalize: bool = True, period: str = '30D') -> float

   
   Base level index (BLI) adapted after :cite:t:`organization_manual_2008`.

   :param series: Pandas Series with DatetimeIndex and head values.
   :type series: pandas.Series
   :param normalize: normalize the time series to values between zero and one.
   :type normalize: bool, optional
   :param period: Period to resample the time series to in days (e.g., '10D' or '90D'). Default
                  is 30 days.
   :type period: str, optional

   :returns: Base level index.
   :rtype: float

   .. rubric:: Notes

   Adapted analogously to its application in streamflow. Here, a baselevel time
   series is separated from a X-day minimum head in a moving window. BLI
   equals the total sum of heads of original time series divided by the total sum of
   heads from the baselevel time series. Both these time series are resampled to daily
   heads by interpolation for consistency.















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