It is possible to plot soil parameter data measured by other means like laboratory tests, over the estimations plots from CPTu. Click on the 
icon located on the CPT Data toolbar and the following dialog will appear:
Custom estimations input dialog
At the left of the dialog there is a list with the available estimations, a checked box indicates that custom estimation data (if any) will appear over the interpretation plot. In order to view or add custom data you first need to select an entry from the list. Once the selection is made any custom data that already imported will appear on the Data Preview area. If no data is available for preview then an empty table will appear.
Custom estimations data
Estimation plot with custom data
