Fig. 1.

Left: frequency distribution of polars perpendicular to the galactic plane based on the distances in the Gaia DR2 for the stars listed in the final 2016 version 7.24 of the catalog of Ritter & Kolb (2003). The red histogram shows all polars, and the blue histogram shows long-period systems with Porb > 0.12 d. Right: distribution of the absolute G-band magnitude. Arrows indicate individual objects discussed in the text.
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