condition mean min max 0 h after light 69.76735 68.8554 70.6793 4 h after light 30.0223 29.2399 30.8047 8 h after light 21.5378 20.3963 22.6793 4 h after dark 33.4256 30.3519 36.4993 8 h after dark 51.4786 50.087 52.8702 12 h after dark 65.45205 61.2933 69.6108