These plots are prepared using covidregionaldata to download data published by Robert Koch-Institut (RKI).
Ridgeline graphs allow for comparison of the incidence in different regions side by side. These are not per capita calculations but just the daily incidence. There is no smoothing, so weekly variations and gaps in testing or reporting due to weekends or holidays are visible.
Where there are many level 1 regions, the top 10 regions are displayed.
The top 10 level 2 regions are shown.
The following charts are a form of aggregated heatmap. They are a stacked column display of the number of regions for each country with average weekly incidence falling into certain ranges. This gives an overview of how concentrated a shift in the data may be, but masks variation as to which regions are being more or less impacted from week to week.
Plotting these charts for level 2 regions typically shows smoother curves.