After summertime (24-03-18) my Tagavg in AF:
is different from the AVERAGE seen in Pi Vision (using a table with AVERAGE configured) over a same period.
Before summertime (-1h) the results were the same....
The PI Vision Table Average is a Time-Weigthed average (TagAvg):
However this Table Average is an on-demand calculation that uses your machine time to request a calculation.
Is your Analysis output mapped to a PI Point?
If that is the case, you could create an Analysis Data Reference output (no tag mapped), so the Analysis is also calculated on-demand, to check this hypothesis.
Retrieving data ...