condition mean min max 2 h after light 2.7620483333333334 1.96727 3.59976 6 h after light 1.9441483333333334 1.10626 2.3565 10 h after light 2.20118 1.70007 3.08349 14 h after light 2.639965 2.18955 3.2 18 h after light 2.640835 2.26367 2.94961 2 h after dark 1.6101733333333335 1.27107 1.96496