you could use sqlite3 to select the data you want and output in csv format
eg like this:

sqlite> .header on

sqlite> .mode csv

sqlite> .output datafile.csv

sqlite> SELECT dateTime, outTemp, outHumidity, rain, windDir  FROM archive 
where dateTime > xxxxxxxxxxx and dateTime < yyyyyyyyy;

sqlite> .quit

where of course you change the select statement and dateTime constraints to 
suit your requirements more exactly



On Friday, 15 March 2019 11:29:58 UTC+2, Jacques-Olivier Farcy wrote:
>
> Hello,
>
> I use a RapBerry 3 with a Vantage Pro 2 and weewx and everything usually 
> works fine.
> I export data in csv format with csv plugin.
>
> Last month i had a network issue, and i don't have febuary csv data.
>
> Now it works again, is there any way to recover these lost data ?
>
> Thanks in advance.
>
> Jacques-Olivier
>
> https://station-biologique-paimpont.univ-rennes1.fr/meteo/
>

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