symbol
and then click on the view chart symbol 
against a particular Parameter/Monitoring
Point.
Graphs can be generated of the readings that have been recorded for each Parameter/Monitoring Point.
In the Data module go to the Monitoring Programme, open a
Category by clicking on the symbol
and then click on the view chart symbol against a particular Parameter/Monitoring
Point.
Enter From & To dates and click Generate Graph.
You can also:
•Display Average Line.
•Display Min / Max Line(s).
•Display Standard Deviation graph.