condition mean min max 4 h after light 835.0 835.0 835.0 8 h after light 805.0 744.3 865.7 12 h after light 3655.0 928.3 6381.7 4 h after dark 6376.85 5422.2 7331.5 8 h after dark 6956.799999999999 6387.7 7525.9 12 h after dark 5214.3 3648.4 6780.2