condition mean min max 0 h after light 0.157911 0.0 0.315822 4 h after light 0.472282 0.321799 0.622765 8 h after light 0.4732005 0.321487 0.624914 4 h after dark 0.6215795 0.620354 0.622805 8 h after dark 0.469189 0.311045 0.627333 12 h after dark 0.1576985 0.0 0.315397