condition mean min max 0 h after light 10.83745 10.3959 11.279 4 h after light 6.997295 6.95514 7.03945 8 h after light 7.47854 7.42761 7.52947 4 h after dark 11.37305 9.3239 13.4222 8 h after dark 10.7274 10.6366 10.8182 12 h after dark 11.1695 10.1941 12.1449