condition mean min max 0 h after light 20.23305 18.5092 21.9569 2 h after light 20.17435 19.5683 20.7804 4 h after light 23.52465 21.5781 25.4712 8 h after light 46.662549999999996 38.5085 54.8166 12 h after light 39.637249999999995 36.4098 42.8647 2 h after dark 29.57265 27.5657 31.5796 4 h after dark 26.14385 24.8259 27.4618 8 h after dark 35.58735 34.7928 36.3819 12 h after dark 25.9464 25.5122 26.3806