and 2 seconds after posting that I thought of a slight alteration...(posted 8531 days ago)
Fahrenheit 64.00 65.00 66.00 67.00 68.00 69.00 70.00 71.00 72.00 73.00 74.00 75.00 76.00 77.00 Celsius 17.78 18.33 18.89 19.44 20.00 20.56 21.11 21.67 22.22 22.78 23.33 23.89 24.44 25.00 Factor 1.23 1.16 1.10 1.05 1.00 0.95 0.90 0.85 0.81 0.78 0.75 0.72 0.69 0.66