40 4 20 0.341703 0.00566766 80 4 20 0.314639 0.00366265 160 4 20 0.312888 0.00347897 320 4 20 0.320407 0.00439644 640 4 20 0.397531 0.00441846 1280 4 20 0.506558 0.00237146 2560 4 20 0.775052 0.0050415 5120 4 20 1.30099 0.00383635