condition mean min max 4 h after light 9675.3 9675.3 9675.3 8 h after light 9491.2 8761.0 10221.4 12 h after light 10046.05 9447.5 10644.6 4 h after dark 9047.05 6519.0 11575.1 8 h after dark 8553.95 8126.5 8981.4 12 h after dark 8379.15 8179.8 8578.5