condition mean min max 4 h after light 2.755675 2.41222 3.09913 8 h after light 4.096495 3.98439 4.2086 12 h after light 6.770685 6.74706 6.79431 4 h after dark 7.912229999999999 7.81544 8.00902 8 h after dark 5.8448899999999995 5.69457 5.99521 12 h after dark 4.324714999999999 4.02259 4.62684