condition mean min max 4 h after light 11.466375 9.80995 13.1228 8 h after light 10.93905 10.6121 11.266 12 h after light 16.5823 15.0769 18.0877 4 h after dark 16.8322 16.194 17.4704 8 h after dark 15.501999999999999 14.7889 16.2151 12 h after dark 14.38655 14.2338 14.5393