condition mean min max 4 h after light 588.3 588.3 588.3 8 h after light 576.9 570.3 583.5 12 h after light 582.4 529.3 635.5 4 h after dark 577.6500000000001 497.6 657.7 8 h after dark 716.8499999999999 637.4 796.3 12 h after dark 669.15 662.5 675.8