8 0.7900390625 0.70703125 0.419921875 0.5859375
17 0.2841796875 0.6630859375 0.568359375 0.470703125
15 0.599609375 0.376953125 0.24609375 0.369140625
15 0.787109375 0.85546875 0.236328125 0.2734375