condition mean min max 4 h after light 138.2 138.2 138.2 8 h after light 89.05 83.6 94.5 12 h after light 90.1 61.1 119.1 4 h after dark 82.6 73.5 91.7 8 h after dark 86.19999999999999 53.3 119.1 12 h after dark 144.05 126.2 161.9