condition mean min max 4 h after light 4.7296233333333335 4.61163 4.92891 8 h after light 4.63936 4.5512 4.77313 12 h after light 4.5486699999999995 4.317069999999999 4.80945 4 h after dark 4.613203333333334 4.39945 4.8318900000000005 8 h after dark 4.705076666666667 4.6714 4.752680000000001 12 h after dark 4.725466666666667 4.61573 4.942769999999999