1              -0.00049666               0.00023137
           2              -0.00114330               0.00033700
           4              -0.00220553               0.00079302
           8              -0.00521627               0.00406516
          16              -0.01043866               0.00759636
          32              -0.02044470               0.01534855
          64              -0.04164327               0.03095723
         128              -0.08520700               0.06295236
         256              -0.17225802               0.12601503
         512              -0.35312670               0.25003601
        1024              -0.70237176               0.49834099
        2048              -1.40165204               0.99363366
        4096              -2.80737320               1.99951646