Overview of the RRL emission in the star-forming complex around l = 29.93°, b = −0.03°. The central panel shows integrated emission between 40 and 140 km s⁻¹ after stacking seven RRLs in velocity at 25″ resolution. The GLOSTAR 5.8 GHz D-array continuum is shown (gray contours) always increasing by a factor of two starting from 10 mJy beam⁻¹. ATLASGAL 870 μm emission (Schuller et al. 2009) is shown (black contours) increasing by a factor of two starting from 0.5 Jy beam⁻¹. The positions of extracted spectra in the side panels are indicated with blue crosses; detected CH₃OH 6.8 GHz masers are indicated by cyan crosses. The side panels on the left compare the RRL spectra to ¹³CO (3–2) emission from the CHIMPS survey (Rigby et al. 2016), and to the H₂CO absorption at 0.5 km s⁻¹ spectral resolution from GLOSTAR. All data have been smoothed to 25″ resolution. The right panel shows a zoom-in on the cometary H II region G29.96−0.02 in 5.8 GHz continuum emission from the GLOSTAR survey in B configuration at 2″ resolution. Overlaid with cyan crosses are fitted CH₃OH maser position peaks at different velocity channels from GLOSTAR (1.4″ × 1.0″). SMA 862 μm emission from Beuther et al. (2007) is shown (black contours) at 83, 105, 147, and 168 mJy beam⁻¹.