condition mean min max 4 h after light 5.51036 4.6323 6.38842 8 h after light 6.117065 5.46565 6.76848 12 h after light 11.357299999999999 11.2875 11.4271 4 h after dark 15.35805 15.1943 15.5218 8 h after dark 11.112075 9.71115 12.513 12 h after dark 8.97138 7.96805 9.97471