condition mean min max 4 h after light 759.8 759.8 759.8 8 h after light 693.3 603.5 783.1 12 h after light 866.35 628.5 1104.2 4 h after dark 1019.8 793.5 1246.1 8 h after dark 1206.05 994.9 1417.2 12 h after dark 929.65 847.8 1011.5