Thank you for the reply. But as I wrote in othe thread 
(https://groups.google.com/g/weewx-user/c/aPjmvWN9Kss), values in 'archive' 
table looks normal. So I don't know what is correlation between 'sum' and 
'wsum'  and what is the reason that in the current data I have the correct 
values, and the daily summary shows something strongly deviating from 
reality. I would like to fix this, because it spoils the statistics a lot, 
and I would not like to zero out the rain from the whole day.

niedziela, 4 maja 2025 o 11:55:34 UTC+2 [email protected] napisaƂ(a):

> To correct your rain values modify the column in the archive table, then 
> let weewx build the daily values for the affected dates. I can't remember 
> if the rainRate is a derived value or not (or if it depends on the 
> hardware), if so, you might want to (delete and) recalculate this derived 
> value also. There shouldn't be any need to modify die archive_day table.
>
> See:
>
> https://weewx.com/docs/5.1/custom/database/?h=reb#rebuilding-the-daily-summaries
>
> https://weewx.com/docs/5.1/utilities/weectl-database/?h=derived#calculate-missing-derived-variables
>
>
>
>
> Tomasz Lewicki schrieb am Samstag, 3. Mai 2025 um 18:44:31 UTC+2:
>
>> I would like to ask which columna in the archive_day_rain array stores 
>> the daily rainfall. The problem is that Weewx has treated today's rainfall 
>> at my place in a very strange way - the daily summary in the HTML files 
>> shows more than 130 mm. The station panel (logger) recorded 12 mm and this 
>> is the correct value, because another station located about 1 km from me 
>> recorded a similar value. I would like to manually correct the daily 
>> precipitation in the weewx.sdb file, but I don't know which column I should 
>> edit - sum or wsum. In what units is the precipitation value expressed? In 
>> the wsum column I have 1515 - but what?
>
>

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