Unless otherwise noted, the charts on this page count distinct observations matching a given condition within a given aspect, grouped by week. The top (colored) chart in each group shows the proportion of measurements during each week, and the bottom (grey) chart shows the absolute volume of conditions seen.
By clicking on a bar you will see all observations which led to that result.
Note that measurements may be heterogeneous, using different methodologies and infrastructures. Low-volume weeks, in particular, may not be indicative of a problem with a given feature.