condition mean min max 0 h after light 6.56925 6.53452 6.60398 4 h after light 8.873864999999999 8.7061 9.04163 8 h after light 6.822015 6.38041 7.26362 4 h after dark 9.87916 8.45062 11.3077 8 h after dark 7.6096900000000005 7.08312 8.13626 12 h after dark 6.145875 5.04275 7.249