Filtering Analytics Results
Central initially displays HTML5 output analytics data from the last 30 days.
In the toolbar, you can click to change the filter settings. You can select from a number of different date ranges, including a custom range.
If you change the filter date range, you can always click Reset Filter in the toolbar to quickly return to seeing data for the last 30 days.
Also, using the filter dialog you can adjust how data is represented in the graph at the top (by search count or result count).