condition mean min max 0 h after light 20.36685 19.9941 20.7396 2 h after light 11.03155 10.6214 11.4417 4 h after light 8.909165 8.87618 8.94215 8 h after light 11.537205 9.84461 13.2298 12 h after light 12.04895 11.1352 12.9627 2 h after dark 13.67325 13.5365 13.81 4 h after dark 15.15895 14.7166 15.6013 8 h after dark 23.7178 22.9774 24.4582 12 h after dark 21.5901 20.7969 22.3833