Correlation between the shifts (top) and widths (bottom) of the [O III] and Hα wing components for the total sample. The unblended subsample is denoted with full circles and the blended subsample with open circles. The Pearson coefficient of correlation (r), P-value, slope (k), and intercept (n) of the best linear fit (solid line) are given. The dashed line represents the one-to-one relation and the shaded region corresponds to the 95% confidence interval.