condition mean min max 0 h after light 16.8902 15.302 18.4784 2 h after light 21.36005 16.129 26.5911 4 h after light 19.39815 18.6515 20.1448 8 h after light 19.5396 16.9022 22.177 12 h after light 28.88975 28.4653 29.3142 2 h after dark 31.99395 31.3703 32.6176 4 h after dark 30.651249999999997 28.5192 32.7833 8 h after dark 32.855 29.4836 36.2264 12 h after dark 23.46545 23.4358 23.4951