Quantitative comparison of the distributions of logR vs. T_eff (and G_BP−G_RP colour) asa function of Galactic latitude, as measured by the KLD statistic. The data are consistent with the expectation that the stellar populations are similar for all Galactic latitudes, except for |b| ≲ 20°, where the behaviour is markedly different, revealing systematic issues with the determinations of radii and temperatures at low latitudes.