condition mean min max 2 h after light 1.142412 0.514374 2.32656 6 h after light 1.0960988333333332 0.834093 1.45475 10 h after light 0.8294135 0.304424 1.19587 14 h after light 1.0578876666666668 0.55672 1.43721 18 h after light 1.1660490000000001 0.36992 1.78214 2 h after dark 1.1741258333333333 0.764373 1.60832