TABLE 3 Quality of description with different values for *N* and L_{WT}

The experimental values for EC_{50} for GABA were compared with values predicted with different assumed values for *N*_{GABA} and L_{WT} using the logarithm of the ratio (EC_{50,exp}/EC_{50,pred}) to assess the quality. The first and second columns give the assumed value for L_{WT} and *N*_{GABA}. The third column gives mean ± S.E.M. for the parameter. The fourth column gives the *P* value that the mean differs significantly from 0 (where a value of 0 indicates identity of EC_{50,exp} and EC_{50,pred}; one sample two-tailed *t* test). The data sets analyzed are shown in Fig. 4, A and B, 13 pairs of values for L and EC_{50,GABA}.