condition mean min max 4 h after light 922.4 922.4 922.4 8 h after light 768.75 724.3 813.2 12 h after light 625.0 545.6 704.4 4 h after dark 591.65 441.9 741.4 8 h after dark 668.1 546.1 790.1 12 h after dark 729.8499999999999 574.9 884.8