condition mean min max 4 h after light 11.6 11.6 11.6 8 h after light 8.7 2.9 14.5 12 h after light 6.15 6.0 6.3 4 h after dark 17.6 10.8 24.4 8 h after dark 7.300000000000001 6.3 8.3 12 h after dark 6.949999999999999 4.7 9.2