WD Tag %dewchangelasthour% Seems Incorrect

I am currently running WD V10.37f Build 11 on a Windows XP Professional SP2 machine and have ran into an issue with the %dewchangelasthour% tag. It appears that the tag is not calculating the correct difference. (See below).

12:00 am Dew Point 55.8
01:00 am Dew Point 54.4 WD Shows Difference as: -10.8
02:00 am Dew point 54.0 WD Shows Difference as: -10.7
03:00 am Dew point 54.8 WD Shows Differance as: -8.5
04:00 am Dew point 57.9 WD Shows Difference as: -4.5
05:00 am Dew point 60.6 WD Shows Difference as: -1.7
06:00 am Dew Point 61.0

Don’t remember seeing this issue/problem at the previous code level which was V10.37d Build 00.

Thanks

Sorry, forgot to include the equipment type: Davis Vantage Pro II.

ah,ok, i was instead showing change for last 12 hours
(After I had converted it to use last 31 days data format)
next update of wd will fix that