Maps of integrated intensity (moment 0, left, integrated between −55.3 and −29.8 km s⁻¹), intensity-weighted velocity (moment 1, middle), and intensity-weighted FWHM (moment 2, right) for combined NOEMA and 30 m data for H₂CO 3_0,3 −2_0,2, focusing on the filament. The grey contours indicate 5σ for the NOEMA 1.4 mm continuum with uniform weighting, as in the right-hand panel of Fig. 2. The cyan contours show the moment 0 of the H₂CO 3_2,2 −2_2,1 transition, starting at 5σ (σ = 0.019 Jy beam⁻¹ km s⁻¹) and increasing to 25σ in 5σ steps. The mean velocity near the hot core is approximately −44.5 km s⁻¹. The moment1 and 2 maps are calculated using channels above 4σ and only for pixels where the integrated intensity is also above 4σ_mom0, with grey used to indicate those regions that do not meet these requirements.