Thanks to Gabor and Gary for their help in identifying and then suggesting a solution for the too high rain reading. It looks like I was publishing the rain rate instead of the daily rain!
As I have learned, each weather station is different and the ATMOCOM udp driver sensor map must be customized so that the field names match the correct raw packet values. Thanks Gary for identifying the syntax error in the code so I could obtain the raw packet values.
Thanks!!!