Spatial distribution analysis for near-IR distances derived using E(J − K_s). The right and left panels show metal-poor ([Fe/H]_phot < −1.0 dex) and metal-rich ([Fe/H]_phot > −1.0 dex) RR Lyrae variables in our dataset (black dots). Two approximate bar angles (20 and 30 degrees) are shown with red triangles and blue circles, respectively with shading marking the angles in between. Similar to Fig. 6, we show measured and zero angles with dashed yellow and dotted black lines. Lastly, the quality of the ellipse fit for the left panel is χ² = 0.45.