condition mean min max 3 h after light 16.9739 15.8075 18.4145 6 h after light 17.990733333333335 16.4509 19.2856 9 h after light 20.7176 19.9829 21.7515 12 h after light 25.971025 19.7083 31.1026 3 h after dark 32.8086 29.0526 34.7037 6 h after dark 38.17786666666667 34.5433 40.4074 9 h after dark 38.93213333333333 36.4649 43.4046 12 h after dark 35.14555 33.7688 36.5223