I agree with Ocala. I am not sending my data to CWOP or WU as yet but will probably someday. I like to go through the data to see things that Ocala mentioned. I also keep a daily diary, or log, of weather conditions that I like to match up to the data from the station. I just write down a paragraph or so of what the day was like. For example-rainy, windy, cloudy(what type), fog, frost, frontal passages, storms, and any other significant features of the day. I then can compare the numbers from the station to the conditions in the diary. As time goes by I have 2, 3 & 4 years of data to compare. What the heck, it makes the day more interesting.