condition mean min max 4 h after light 3.700533333333333 3.65312 3.75241 8 h after light 3.715 3.6751099999999997 3.77791 12 h after light 3.75664 3.6958 3.8709 4 h after dark 3.7336366666666665 3.68335 3.82916 8 h after dark 3.6316999999999995 3.5722099999999997 3.7275199999999997 12 h after dark 3.7250966666666665 3.7113199999999997 3.75126