condition mean min max 4 h after light 3.073185 2.83366 3.31271 8 h after light 3.713585 3.47065 3.95652 12 h after light 4.105685 4.08567 4.1257 4 h after dark 6.9124 6.46448 7.36032 8 h after dark 6.03756 5.91639 6.15873 12 h after dark 5.153980000000001 5.0682 5.23976