So, I've now been running weathercat for 1 year. I'm running Mac OSX and using Weathercat on this platform but am also running Windows (VM Ware) and am also downloading data to the Davis Weathersoftware. I have run yearly reports for both softwares and it is very interesting the slight difference in both reports.
The 2016.txt is from the Davis software (windows) and the pdf file is the report generated from Weathercat (Mac OSX).