Some problems with data.

 At the end of August we had a thunderstorm and not quite sure why but when I shut everything down to pull the plug until lightning had passed the final day seemed to get messed up and that also messed up the whole month - though only the rain total was significantly affected.
It seemed like having a few entries missing at the end made it an incomplete or invalid total so it just indicated 0.0mm when it should have been about 12.8mm I think (still very low!).

I downloaded a more recent version of the software in the hope it would behave differently but it still calculated the rain total as zero.

I decided to leave it on the newer software as all seemed OK otherwise.
Month ends are often when issues arise and inexplicably at the very last day of September it *lost* the first six days completely.
The data does back up to server but overwrites at 6am daily so the backup was also overwritten.

Rainfall was hardly affected by that but the September mean temp was about 1C lower than it should be since the first week was quite hot.

There was no obvious reason this happened as the power had not gone out so suspicion falls on the new software since the old version never 'lost' several days irretrievably so far as I know.
So I have put it back on older version but there is still no easy way to retrieve the lost days though they are shown in wunderground page.
In teh past you could download a .csv from there and convert it then replace missing data here but they have hidden or removed that option now.

No big deal but somebody might notice discrepancies.
I can correct those figures manually but not much point doing it until year end as it will overwrite with wrong data at each month end until January starts.