Reconstructed properties of isolated Gaussian filaments. Top: Percentage of emission recovered along the entire radial profile vs. FWHM₀ Different colors are used for the different data combination methods used: blue for the ALMA 12 m-alone, orange for the 12 m + 7 m, pink for the ALMA Feather, green for the ALMA MACF, and black for the ALMA 12 m + IRAM-30 m MACF. The grey dotted and dashed lines show θ_res(12m) and θ_MRS(12m), respectively. Middle: Intensity peak estimated from the Gaussian fit vs. FWHM₀. Bottom: FWHM estimated from the Gaussian fit vs. FWHM₀. The grey solid line shows the theoretical expectation. For comparison, the results for the radial profile shown in Fig. 8 with FWHM₀ = 30 arcsec correspond to values close to θ_MRS(12 m).