Herschel SEDs (diamonds) of two UCHII regions G29.1-0.0 and G29.2-0.0 from Paladini et al. (2012) and two cold cores PCC 288-B and PCC 550-P1 from Juvela et al. (2010). Polynomial+Gaussian fits of the TLS model are represented by the continuous line between 100 μm and 2 mm. Squares represent the polynomial+Gaussian fit integrated in the band filters of each instrument which allow direct comparisons with the data (diamonds).