condition mean min max 4 h after light 1038.9936635 924.789032 1153.198295 8 h after light 993.4518635000001 952.662362 1034.241365 12 h after light 1058.14362 898.862876 1217.424364 4 h after dark 1435.128409 1064.126343 1806.130475 8 h after dark 1328.1870975 1055.704646 1600.669549 12 h after dark 1141.994965 1141.994965 1141.994965