Basis analyses are analyses that are present in every Insights installation.
System size
This analysis displays collected and predicted system sizes across time in form of line chart. Visualization allows user to restrict analyzed date range and also display predicted values.
System size analysis chart
...
It is possible to display forecasted values for this chart. User can enable/disable display of these values by clicking on 
prediction button. Predicted values are only available if prediction mechanism is correctly set up on backend. Please refer to section Appendix A: How to enable prediction for detail information. Table view provides user with information of particular values of system size and its predictions. For one time point there can be multiple predicted values each calculated by different forecast method.
...
Table view of system size analysis
Housekeeping potential
Based on the analysis performed in the system, visualization provides you with an overview on the potentials for housekeeping of particular areas (such as Table logs, RFC logs, Changelogs, PSA, Application logs and IDocs).
Housekeeping potential analysis chart
...