condition mean min max 4 h after light 3.4693616666666665 3.3143029999999998 3.745386 8 h after light 2.659574666666667 1.708451 3.3846300000000005 12 h after light 6.6839846666666665 5.584731 8.430593 16 h after light 5.002727 3.7816769999999997 7.270117999999999 4 h after dark 4.650647666666667 3.1882189999999997 6.634307000000001 8 h after dark 2.0529460000000004 1.7869490000000001 2.4768310000000002