condition mean min max 4 h after light 1.516945 1.43646 1.59743 8 h after light 1.5072999999999999 1.1729 1.8417 12 h after light 2.4490800000000004 1.63803 3.26013 4 h after dark 2.82288 2.32133 3.32443 8 h after dark 2.593605 2.14196 3.04525 12 h after dark 2.0513850000000002 1.97272 2.13005