condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.59787 0.0 1.79361 4 h after dark 0.66751 0.0 2.00253 8 h after dark 0.0 0.0 0.0 12 h after dark 0.6583233333333333 0.0 1.97497