Inaccuracy and imprecision of the parameters in global fits of CHA ^x models. (A) Inaccuracy. The mean inaccuracy for each parameter x_i, iac_i,n, was computed by Eq. 14. The number of included successful_p fits, n, is indicated in brackets. (B) Imprecision. The mean imprecision for each parameter x_i, ipr_i,n, was computed by Eq. 11. The diagrams confirm that the channels with more binding sites provide a lower imprecision than the channels with less binding sites.