Do you have a need for chill hour measurements? There are a couple of online sources that you can use to calculate chill hours for your location. AgroClimate has a great graphic package that allows you to pick between two chill hour models. You can find it at http://agroclimate.org/tools/Chill-Hours-Calculator/.
If you are in Georgia, the Georgia Automated Environmental Monitoring Network also has chill hour calculators for each of their stations which allow you to select a start and end date. The current chill hours for all of their stations can be found at http://weather.uga.edu/aemn/cgi-bin/AEMN.pl?site=AAAA&report=ci.
Information obtained from http://site.extension.uga.edu/climate/ and written by Pam Knox firstname.lastname@example.org