condition mean min max 4 h after light 10655.7 10655.7 10655.7 8 h after light 10289.0 9646.1 10931.9 12 h after light 9698.05 8812.4 10583.7 4 h after dark 11665.45 9459.5 13871.4 8 h after dark 11507.4 8632.0 14382.8 12 h after dark 8739.6 8011.3 9467.9