Cumulus Support

How to delete Last Hour Rain and Last 24 hrs rain ?

I delete all the rain in the station and delete in the folder data :
http://scr.hu/0fqx/7bpfp
And delete rain in the today.ini and rain last hour comeback ;(

Those calculations rely on the rain counter from the station being sensible, and that's not always the case with Fine Offset stations. It's not easy to correct (as it says in FAQ); you would have to stop Cumulus and edit the total rain counter values in the May log file so that the values are correct with respect to the current value. It's easier just to wait until the values drop off.