Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 138)

Chapter 3 Collecting Performance Data
5. Edit the values that you want to change.
In the example presented in the figure below, we subtracted 6
minutes from the Actual Availability value, due to the power
outage.
6. Click OK.
138 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014