Spectra of the (J,K) = (1,1) inversion transition of the NH₃ molecule toward the positions given in Table 2 for the detected sources. The vertical axis is the main beam brightness temperature and the horizontal axis is the velocity relative to the center of the main line (as given in Table 2). For M120.1+3.0-N, L1641-S3, HH270/110 and IRAS 20050, spectra at two different positions are shown. The spectrum of V1057 Cyg corresponds to the average of positions with detected emission in a five-point grid.