condition mean min max 0 h after light 0.979664 0.840568 1.11876 4 h after light 1.6822300000000001 1.65456 1.7099 8 h after light 4.507820000000001 3.75814 5.2575 4 h after dark 2.3670150000000003 2.36235 2.37168 8 h after dark 1.38357 1.26712 1.50002 12 h after dark 0.797843 0.502766 1.09292