Cumulative Chilling Hours
Hours below 45°F
Hours between 32°F and 45°F
November 1 thru February 28/29 Cumulative Chilling Portions
Portions (Dynamic Model)
September 1 through August 31 Cumulative Chilling - Research
Hours below 45°F
Hours between 32°F and 45°F
Units (Utah Model)
September 1 through August 31