condition mean min max 4 h after light 4.525056666666667 4.46062 4.64885 8 h after light 4.51906 4.26525 4.74308 12 h after light 4.43814 4.378819999999999 4.53578 4 h after dark 4.48471 4.24766 4.66406 8 h after dark 4.6049533333333335 4.36749 5.02614 12 h after dark 4.424406666666667 4.42224 4.42706