condition mean min max 4 h after light 5.78738 5.53338 6.0835099999999995 8 h after light 5.65125 5.52217 5.73995 12 h after light 5.606076666666667 5.3421199999999995 5.7590699999999995 4 h after dark 5.8563133333333335 5.47521 6.09933 8 h after dark 5.989529999999999 5.7698599999999995 6.1715599999999995 12 h after dark 6.077976666666666 5.95735 6.24855