Histograms of the stellar population synthesis modeling for INT (filled red bars) and CTR (full blue lines) samples. The histograms also show the mean (dotted vertical lines) and median (dashed vertical lines) values for both samples and the KS test p-value. The first two rows of histograms present the light-weighted properties. They present the sum of light fractions younger than 2 Gyr (x_[y, io] = xy+xiy+xio), the light fractions in the older stellar populations (xo), the light-weighted mean ages, and mean metallicities. The following two rows present the mass-weighted results of the same properties. The lower right histogram shows the stellar extinction of the samples.