The following Web console Health Analyzer reports display "0" or "No Data Available":
An issue was found with trending data points which include many AD Health datapoints from the web console reports. This has been an issue in Active Administrator 8.7 and 8.7.1. A defect has been created to address this in the upcoming Active Administrator 8.7.2 hotfix.
WORKAROUND:
None
STATUS
Defect ID - 498940 has been created to consider including a fix in a future release of the product.