condition mean min max 4 h after light 8.655949999999999 6.169 11.1429 8 h after light 10.155475 9.11855 11.1924 12 h after light 14.00865 13.8031 14.2142 4 h after dark 20.48773333333333 18.9426 23.5707 8 h after dark 20.477133333333335 17.725 22.7922 12 h after dark 11.8653 11.4376 12.5516