condition mean min max 4 h after light 5.514995000000001 4.31186 6.71813 8 h after light 5.77966 5.66844 5.89088 12 h after light 5.3243 4.84521 5.80339 4 h after dark 7.122193333333334 5.81669 9.22946 8 h after dark 7.83781 6.76553 8.75985 12 h after dark 8.111416666666667 6.16971 11.5214