Comparison of the X-ray to bolometric flux ratio as a function of the BP – RP color for the stellar RASS sources with a consistent and contradicting NWAY identification. The color scales with the distance of the counterparts, and matches without parallaxes in Gaia EDR3 are shown in black. The top, left, and right panels show the distribution for the consistently identified sources, the sources identified by our method but not by NWAY, and the NWAY associations that we did not identify, respectively. The gray dots show the distribution of the top panel as a comparison.