Fig. 2
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Comparison of the photogeometric distances of the 459 H II regions with the other two types of distance determined from the Gaia DR3. Left: photogeometric distance versus geometric distance. Right: photogeometric distance versus inverse parallax. The grey line in each panel represents the equal line. The grey dashed ellipse denotes the H II region G331.172-00.460 (see Sect. 3.2).
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