Results of BeeP analysis for cold clump IRDC MSXDC G033.69−00.01. See the caption of Fig. 7 for a full description. We note the low temperature of this source (about 14 K). BeeP obtains a good fit for this cold source on a warm background, but we see that the recovered flux densities (middle panel) are well below those obtained by PCCS2+2E. Examination of the source maps shows that it is surrounded by bright complex structure, which has confused the aperture photometry used by PCCS2+2E; indeed other flux-density algorithms (e.g., DETFLUX in PCCS2) obtain values closer to those of BeeP.