condition mean min max 0 h after light 2.98369 2.6166 3.35078 4 h after light 3.57151 3.48525 3.65777 8 h after light 4.2824100000000005 3.77949 4.78533 4 h after dark 5.4133949999999995 4.85475 5.97204 8 h after dark 4.053545 3.96907 4.13802 12 h after dark 3.45993 3.02504 3.89482