condition mean min max 4 h after light 3.8697150000000002 3.74933 3.9901 8 h after light 3.2580299999999998 3.13627 3.37979 12 h after light 1.83498 1.52462 2.14534 4 h after dark 3.30556 3.07379 3.61477 8 h after dark 4.09393 3.35077 5.10647 12 h after dark 3.609383333333333 3.06432 4.42167