condition mean min max 4 h after light 549.003148 377.519725 720.486571 8 h after light 432.74766750000003 368.001288 497.494047 12 h after light 249.191505 124.262138 374.120872 4 h after dark 276.2029445 223.21086 329.195029 8 h after dark 335.5307765 313.983342 357.078211 12 h after dark 345.861452 345.861452 345.861452