condition mean min max 4 h after light 642.0 642.0 642.0 8 h after light 727.05 711.0 743.1 12 h after light 810.8499999999999 704.9 916.8 4 h after dark 758.7 640.9 876.5 8 h after dark 622.0999999999999 614.4 629.8 12 h after dark 720.8 591.2 850.4