(Left) Dust temperatures inferred from the combination of PACS only (or SPIRE only) together with submm observations, compared with the reference values inferred using PACS, SPIRE and submm observations. These comparisons are for a single dust temperature modified blackbody model. Blue squares represent SMGs situated in blank fields while green diamonds represent lensed-SMGs. (Right) Same comparison but for the inferred infrared luminosities. The dust temperatures and infrared luminosities of galaxies can be reasonably inferred from their PACS+submm or their SPIRE+submm observations alone using a single temperature modified blackbody model.