condition mean min max 4 h after light 23.2294 21.5807 24.8781 8 h after light 15.2116 15.0228 15.4004 12 h after light 30.38035 25.7547 35.006 4 h after dark 44.998999999999995 39.1898 47.9383 8 h after dark 53.530766666666665 49.4048 58.9386 12 h after dark 41.234433333333335 37.1417 46.641