Losing ET ratings after upgrade software

Everytime whne I upgrade the software I am losing a part of the ET. this time 2 mm in a day, so 2 liters per square meter. So every new day after upgrading is a suprise and not a good thing to show the internet visitors.

why?

is there a database with the month ET?

windows xp
vantage pro with ET readings
now using 10.17

and in less than an hour I gain 0.7 mm: sun is not shining, it is eveing here in Holland, quiet with wind and the temperature is decreasing.

hi
yes, i have noticed some jumps when the program is restarted, with the solar…
i have tried to find out why…

the ET is based on the the last 24 hours of cumulative data…
often it does not peak until well into the evening

and so its the final real of the day that is the important reading
(ie at midnight…i.e yesterdays final reading is the one to use