0.75 250. 0.70 500. 0.55 750. 0.52 1000. 0.50 1250. 0.51 1500. 0.47 1750. 0.48 2000. 0.47 2250. 0.46 2500. 0.44 2750. 0.45 3000. 0.43 3250. 0.42 3500. 0.41 3600. 0.39 3700. 0.39 3800. 0.39 3900. 0.39 4000. 0.40 4100. 0.43 4200. 0.46 4300. 0.47 4400. 0.47 4500.