Singing Hills site was 1.5 miles away--took median temps for each day, took number of accumulated hours for each day. From midnight on 27th and worked backwards. "Number of accumulated degree hours to base ten."
Conclusions based on two temperatures
16.1 degrees Celsius, 88-base 10 (1590.3 accumulated degree hours to reach third enstar)
23 degrees Celsius, (1647.1 accumulated degree hours required)