condition mean min max 4 h after light 6.84166 6.41816 7.26516 8 h after light 4.3690999999999995 3.77356 4.96464 12 h after light 4.021235 3.95029 4.09218 4 h after dark 6.507986666666667 5.17877 8.02947 8 h after dark 5.6781266666666665 5.16878 6.54858 12 h after dark 8.981103333333333 7.87762 10.4357