condition mean min max 4 h after light 7.813894 6.858763000000001 8.780223 8 h after light 12.183220333333333 9.342051 17.19408 12 h after light 10.888985666666668 8.279677000000001 14.366220000000002 16 h after light 8.691765 6.874985000000001 10.51897 4 h after dark 5.137995666666667 2.890619 6.866480999999999 8 h after dark 3.8611386666666667 1.545079 6.601281