condition mean min max 4 h after light 9.30339 8.29818 10.3086 8 h after light 7.5382 7.34425 7.73215 12 h after light 10.558499999999999 10.3281 10.7889 4 h after dark 12.304033333333333 11.887 12.5388 8 h after dark 13.093733333333333 12.9466 13.3815 12 h after dark 10.058826666666667 9.19209 11.0461