condition mean min max 0 h after light 18.04815 17.3645 18.7318 2 h after light 18.66435 18.0509 19.2778 4 h after light 19.02975 12.6886 25.3709 8 h after light 14.21045 12.8966 15.5243 12 h after light 25.11565 23.5037 26.7276 2 h after dark 23.4334 23.2967 23.5701 4 h after dark 18.873150000000003 17.7422 20.0041 8 h after dark 30.053350000000002 29.8477 30.259 12 h after dark 20.937350000000002 19.4398 22.4349