Fig. 4

Distributions of the derived physical properties of 116 young H II regions. Panels a–c: distributions of the physical linear diameter diam (a), the electron density ne (b), and the EM (c). The bin sizesare 0.05 pc, 0.25 dex, and 0.25 dex for diam, ne, and EM, respectively. Panels d–f: distributions of the turnover frequency νt (d), the Lyman continuum flux NLy (e), and the dust absorption fraction fd (f). The bin sizesare 0.1, 0.1, and 0.5 dex for νt, fd, and NLy, respectively.
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