I have question.
Can anyone explain why same search query given different results in different time range?
This is time range between 2021-02-24, hour 08:00:00 to 10:59:59
This is time range between 2021-02-24, hour 09:00:00 to 09:59:59
Why the result on hour 09:00:00 different, one show 81 and the other one 387.
Have you the same events in both the time periods?
probably you have different events in the second one so you have a different result, it isn't a strange behaviour.