a) Spectral line maps of HCO⁺(black) and H¹³CO⁺ (red) obtained with the IRAM 30m telescope and regridded to full-sampling. The velocity range is 10 to 20 km s^-1 for CygX-N3, -N12,  − 15 to +5 km s^-1 for CygX-N48 and CygX-N53,  − 10 to 0 km s^-1 for CygX-N63. The intensity of the optically thin line (H¹³CO⁺) is scaled up by a factor of 2–4. Dashed squares indicate the size-scale of the right panel. b) Spectral line maps of H¹³CO⁺ PdBI combined with IRAM 30m, where the spectra-cubes were regridded to 3′′ resolution. Velocity ranges are 10 to 20 km s^-1 for field CygX-N3,- N12 and  − 10 to 0 km s^-1 for CygX-N48, -N53 and -N63, respectively. The gray-scale background image is the 3 mm continuum emission obtained simultaneously with the PdBI (from 3σ to 75σ). (The gray dashed contours show the (logarithmic) contour levels of 3σ, 4.8σ, 7.5σ, 12σ, 19σ, 30σ, 75σ, and 120σ, where σ is between 0.17 to 0.33 mJy/beam similarly as in Paper I.) Gray solid line contours show the integrated intensity maps of H¹³CO⁺ (same as in Fig. 4a).