N, RMSE, Max 5,0.16409,0.3425 6,0.12039,0.35163 7,0.09235,0.22161 8,0.069007,0.20683 9,0.30408,0.67187 10,0.26685,0.65864 11,0.030264,0.08199 12,0.02325,0.06863 13,0.018233,0.048259 14,0.013838,0.039793 15,0.010066,0.028177