User`s guide

Remarks
This command clears the minimum, maximum, average, count, and
standard deviation values (but no readings are cleared from memory).
The instrument also clears the stored statistical data when statistics are
enabled, when the CALCulate:FUNCtion command is sent while
CALCulate:STATe is ON, when the power has been off, when the
CALCulate:AVERage:CLEar command is executed, after a Factory Reset
(*RST command), after an Instrument Preset (SYSTem:PRESet command),
or after a function change.