Description of source "18488+0000" from Slysh et al. (1999)

This maser was also observed by van der Walt et al. (1995). The spectra are similar, and a small difference in the ux densities (the peak ux density is 16 Jy according to van der Walt et al. (1995) and 22 Jy according to our measurements) can be explained by cal-ibration errors or/and noise.