The activity is measured by the sum of creating and changing an initiative and creating suggestions. The two first graph shows these sum group by their type and by day. The fist for the whole instance life time, the other for the last month which means 30 days. The activity meter sum the activity and groups it per 60 days accordingly per 10 days and displays the min, max and average sum of activity and the sum of the current activity in the last 60 respective 10 days. So this is a main performance index.