Be careful throwing away archive_day-* data! On my setup with the Davis driver min and max values often occur in between archive intervals. I found that those are lost if the daily summaries have to be rebuilt from the archive table. My archive interval is 5 minutes.
I did some testing a couple of months back cleaning up some spurious solar sensor data that crept in from a failing ISS transmitter. In the process I rebuilt the daily summaries on a copy of the database and saw every daily summary min/max value was on the five minute mark. I knew a recent day had recorded a low, just briefly, at something like 24.4 and in the original DB was recorded at that value at the precise time but both values were lost in the regenerated daily summaries. I've become quite careful to not disturb the daily summaries after that. I think this should be prominently noted in the WeeWX documentation. In my DB I noticed that the dailies started recording this information when I switched to version 4.x in the first days of 2021. I don't recall if there was something done to the DB in that upgrade or not. - Nate -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/20240211203930.wdv3dzmpk5leh5vm%40n0nb.us.
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