1               0.00103550               0.00114508
           2               0.00180391               0.00208342
           4               0.00464137               0.00347600
           8               0.01170631               0.00483673
          16               0.00178466               0.00488744
          32              -0.00791858               0.00603551
          64              -0.02621501               0.02639881
         128              -0.06441163               0.05653868
         256              -0.13878327               0.12011677
         512              -0.27793388               0.24269078
        1024              -0.53564727               0.45590500
        2048              -1.11249543               0.92003872
        4096              -2.24947541               1.86037063