condition mean min max 4 h after light 6.339029999999999 5.86982 6.80824 8 h after light 5.822184999999999 5.75709 5.88728 12 h after light 5.824434999999999 5.67406 5.97481 4 h after dark 7.022915 6.28054 7.76529 8 h after dark 6.5660050000000005 6.45533 6.67668 12 h after dark 6.44741 6.33793 6.55689