condition mean min max 0 h after light 7.81235 6.73646 8.88824 4 h after light 7.9057949999999995 7.77574 8.03585 8 h after light 7.64565 6.1883 9.103 4 h after dark 10.9523 10.8883 11.0163 8 h after dark 7.79731 7.18004 8.41458 12 h after dark 7.85796 6.72741 8.98851