condition mean min max 4 h after light 63.16805 58.7662 67.5699 8 h after light 49.882999999999996 47.984 51.782 12 h after light 73.9991 72.7462 75.252 4 h after dark 137.6455 136.058 139.233 8 h after dark 111.87450000000001 108.233 115.516 12 h after dark 91.07325 89.9137 92.2328