15 0.234375 0.4365234375 0.0859375 0.078125 8 0.736328125 0.7802734375 0.232421875 0.306640625 8 0.8798828125 0.826171875 0.240234375 0.32421875 17 0.2236328125 0.775390625 0.439453125 0.44921875