Examples of two multiple matching scenarios between the UV-VPS catalog and the SDSS database. The upper panel shows GALEX NUV images, where GUViCS sources are inside the solid red Kron apertures, and SDSS sources are in the dashed black 5′′ radii apertures. The lower panel shows SDSS i′ images for comparison with SDSS sources inside the dashed black regions. Left: a single GUViCS source finds a match to two SDSS sources within 5′′. Right: a single SDSS source has two GUViCS matches within 5′′ of its center. These types of multiple matches are excluded from the UV-VPS catalog in Appendix I but can be recovered in the full SDSS-GUViCS matched catalog in Appendix J using the VPS_ID catalog parameter.