condition mean min max 4 h after light 12.791553 12.791553 12.791553 8 h after light 11.86402 10.936487 12.791553 12 h after light 13.266849 11.786318 14.74738 4 h after dark 13.912717 13.26569 14.559744 8 h after dark 12.2806545 11.769756 12.791553 12 h after dark 12.312199 12.312199 12.312199