All Tables

• Table 1: H₂O maser observations.
• Table 2: H₂O line parameters obtained from Gaussian fits.
• Table 3: X-ray flux limits for H₂O maser sources without good X-ray spectra, observed and corrected for galactic absorption (see Sect. 4.2). With the exception of the kilomaser galaxy NGC 4293, all sources host megamasers.
• Table 4: Spectral fitting results (see Sect. 4.2.3 and Fig. 4).
• Table 5: Nuclear X-ray absorbing column densities of extragalactic H₂O maser galaxies^*.