condition mean min max 4 h after light 4.629013333333333 4.56147 4.70107 8 h after light 4.64346 4.5228 4.795730000000001 12 h after light 4.660533333333333 4.56269 4.79931 4 h after dark 4.65971 4.59593 4.69475 8 h after dark 4.673773333333333 4.51106 4.770169999999999 12 h after dark 4.60412 4.52221 4.70158