condition mean min max 4 h after light 90.77115 86.6302 94.9121 8 h after light 72.24915 69.8413 74.657 12 h after light 133.845 124.328 143.362 4 h after dark 176.7505 166.603 186.898 8 h after dark 146.5775 145.666 147.489 12 h after dark 127.8125 122.622 133.003