condition mean min max 4 h after light 352.4 352.4 352.4 8 h after light 327.0 304.0 350.0 12 h after light 545.1 451.5 638.7 4 h after dark 615.1500000000001 543.1 687.2 8 h after dark 585.5999999999999 538.8 632.4 12 h after dark 627.7 619.9 635.5