Cumulus Support

hello everybody,
I'm new on this forum and i'm french
I have got a vantage vue with a TCP IP logger, and i try cumulus software version 1.9.4 build 1099 since two months.
It seems to work fine but i have sometimes rain's data errors, for example, yesterday ( a sunny day) i had 143 mm of rain ??? and of course my monthly rain is bad and for the rainyear too...
Is it possible to change this value and where ?
Does this change correct all my bad datas ?
Thank you for your answers and sorry for my english

If you look in the FAQ, there is lots of information about correcting rainfall and other data, and there is even more information in the wiki.

If you zip up the diags folder and attach it to a reply in this thread, I'll take a look and see if I can see why it happened.