condition mean min max 0 h after light 6.879065000000001 6.42105 7.33708 4 h after light 3.96851 3.78243 4.15459 8 h after light 2.3684700000000003 2.18372 2.55322 4 h after dark 6.614750000000001 6.52906 6.70044 8 h after dark 8.735805 7.80611 9.6655 12 h after dark 4.7068449999999995 4.70456 4.70913