condition mean min max 4 h after light 39.406968 38.375475 40.438461 8 h after light 50.0674915 44.079125 56.055858 12 h after light 40.6461995 28.323654 52.968745 4 h after dark 43.889714 39.027061 48.752367 8 h after dark 32.722989 27.30431 38.141668 12 h after dark 26.81162 26.81162 26.81162