pastas.stats.signatures.cv_date_max

pastas.stats.signatures.cv_date_max(series: pandas.Series) → float

Coefficient of variation of the date of annual maximum head.

Parameters:

series (pandas.Series) – Pandas Series with DatetimeIndex and head values.

Returns:

cv – Coefficient of variation of the date of annual maximum head.

Return type:

float

Notes

Coefficient of variation of the date of annual maximum head computed using circular statistics as described in Fisher [1995] (page 32). If there are multiple dates with the same maximum head, the first date is chosen. The higher the coefficient of variation, the more variable the date of the maximum head is, and vice versa.