40 4 20 0.384814 0.00354645 80 4 20 0.353093 0.00352781 160 4 20 0.353861 0.00579417 320 4 20 0.361885 0.0029161 640 4 20 0.421032 0.00250037 1280 4 20 0.573086 0.0116524 2560 4 20 0.835413 0.00194135 5120 4 20 1.35657 0.0031757