condition mean min max 4 h after light 9.17735 8.994019999999999 9.27017 8 h after light 9.44858 9.40783 9.48988 12 h after light 10.009146666666668 9.77758 10.234060000000001 4 h after dark 10.194293333333333 10.068999999999999 10.356630000000001 8 h after dark 10.234153333333333 10.074 10.32342 12 h after dark 10.088686666666666 9.931000000000001 10.206539999999999