# 5.16.1.2. eqcorrscan.utils.stacking.PWS_stack

`eqcorrscan.utils.stacking.``PWS_stack`(streams, weight=2, normalize=True)

  Compute the phase weighted stack of a series of streams.

  Note

  It is recommended to align the traces before stacking.

  Parameters: | streams (list) List of `obspy.core.stream.Stream` to stack. weight (float) Exponent to the phase stack used for weighting. normalize (bool) Normalize traces before stacking.
  Returns: | Stacked stream.
  Return type: | `obspy.core.stream.Stream`