condition mean min max 4 h after light 9.345914 9.041213 9.650615 8 h after light 9.727581 8.573861 10.881301 12 h after light 9.650615 9.650615 9.650615 4 h after dark 9.4054495 9.082753 9.728146 8 h after dark 8.873387000000001 8.702135 9.044639 12 h after dark 11.805043 11.805043 11.805043