condition mean min max 4 h after light 2163.5712894999997 1954.399836 2372.742743 8 h after light 2124.3143035000003 2000.394553 2248.234054 12 h after light 2102.9911825 1916.68229 2289.300075 4 h after dark 2011.841112 1696.024672 2327.657552 8 h after dark 2060.5671805 1945.376422 2175.757939 12 h after dark 2090.858489 2090.858489 2090.858489