condition mean min max 3 h after light 50.0846 43.2029 57.5189 6 h after light 49.2156 41.1045 54.5543 9 h after light 57.1893 54.3005 59.9622 12 h after light 63.918325 46.8268 76.3249 3 h after dark 60.6428 54.5365 66.2653 6 h after dark 55.9227 50.7452 58.7388 9 h after dark 42.34103333333333 38.3959 48.6059 12 h after dark 40.4931 39.6991 41.2871