Figure D15.

Correlation coefficients between each pair of optimized model parameters, see Table 4. White closed and open circles are α = 0.01 and α = 0.05 deviations of the correlation coefficient ρ from zero, respectively. The test statistic was calculated as $t=\frac{\rho \cdot \sqrt{n-2}}{\sqrt{1-{\rho }^2}}$ (153) and compared against the corresponding quantile of the Student’s t-distribution with n − 2 degrees of freedom (two-sided test), where n = 12 is the number of available datasets.