condition mean min max 4 h after light 2.575765 2.51622 2.63531 8 h after light 2.226495 1.83444 2.61855 12 h after light 2.72356 2.70607 2.74105 4 h after dark 4.306274999999999 3.83908 4.77347 8 h after dark 3.44275 3.25415 3.63135 12 h after dark 4.280905 3.89417 4.66764