condition mean min max 4 h after light 11.8261265 11.805043 11.84721 8 h after light 10.970841 9.931362 12.01032 12 h after light 12.0102795 11.460729 12.55983 4 h after dark 11.9174765 11.748808 12.086145 8 h after dark 12.3168925 11.805043 12.828742 12 h after dark 11.740672 11.740672 11.740672