condition mean min max 4 h after light 17.019033333333333 11.5519 20.8733 8 h after light 13.43302 3.66346 22.236 12 h after light 14.27171 9.41183 19.6249 4 h after dark 29.2832 21.0766 39.1148 8 h after dark 17.6751 13.9913 21.1797 12 h after dark 18.593733333333333 14.163 22.9775