condition mean min max 4 h after light 668.7 668.7 668.7 8 h after light 684.8499999999999 682.3 687.4 12 h after light 637.7 624.7 650.7 4 h after dark 790.5 664.3 916.7 8 h after dark 906.85 786.2 1027.5 12 h after dark 932.75 829.5 1036.0