condition mean min max 4 h after light 31.47655 27.4844 35.4687 8 h after light 20.59565 20.1723 21.019 12 h after light 18.89895 17.9475 19.8504 4 h after dark 31.3611 30.8692 31.853 8 h after dark 29.15755 28.7208 29.5943 12 h after dark 33.786249999999995 32.9097 34.6628