condition mean min max 4 h after light 59.39405 57.854 60.9341 8 h after light 37.5483 33.911 41.1856 12 h after light 117.657 116.365 118.949 4 h after dark 169.30666666666667 166.6 173.085 8 h after dark 146.285 143.201 150.085 12 h after dark 98.37973333333333 92.4389 103.145