condition mean min max 0 h after light 3.4177 3.41465 3.42075 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 5.04369 3.35363 6.73375 8 h after dark 6.75436 6.72602 6.7827 12 h after dark 6.782995 3.33579 10.2302