condition mean min max 3 h after light 39.374 35.1671 42.4924 6 h after light 36.2803 31.2397 43.0169 9 h after light 35.4814 33.4143 39.0487 12 h after light 41.222925000000004 36.8002 46.7072 3 h after dark 50.779 49.6037 52.5647 6 h after dark 44.99173333333333 40.6275 51.4546 9 h after dark 42.78706666666667 38.3155 49.7869 12 h after dark 39.27365 36.8712 41.6761