Is it possible to retrieve the PDF-result (also the variance, not only mean) for specific periods or do I have to retrieve the PSD values and do the statistic analysis in post-processing?

You mean the data from the classic PQLX-style histogram plot? Sure. After you make a plot or manually force a histogram stack (via `ppsd.calculate_histogram()`

) you can access the values as `ppsd.current_histogram`

and you can access the information on the x-/y-coordinates of the bins (centers and edges) as:

- ppsd.db_bin_centers
- ppsd.db_bin_edges
- ppsd.period_bin_centers
- ppsd.period_bin_left_edges
- ppsd.period_bin_right_edges

Edit: As for further statisticsâ€¦ I think only extracting percentiles is supported, if you need further statistics, you can easily do them on the histogram data with numpy methods, e.g. `np.var(ppsd.current_histogram, axis=1)`

and then convert to actual values using the bin widths.

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Thanks. That was exactly my question!