Omron FQ User Manual page 92

Note
• Histogram data is held until the power supply is turned OFF.
• You can select whether to display all data in the histogram or only data for which the overall judgement is NG.
Logging settings are applied to the histogram as well.
However, they are not applied to histograms displayed in Setup Mode.
Check recent measurement trends (recent results logging): p. 101
88
Checking the Trend of Measurement Results with Graphs FQ User's Manual