condition mean min max 0 h after light 178.8295 177.947 179.712 4 h after light 156.632 154.926 158.338 8 h after light 151.45600000000002 151.171 151.741 4 h after dark 217.1795 211.503 222.856 8 h after dark 190.46050000000002 181.943 198.978 12 h after dark 191.3695 186.486 196.253