Mass as a function of Galactocentric distance for the ECC Hi-GAL objects. Red and black symbols indicate the clumps from Category I and II, respectively. Plus signs indicate the clumps in the outer part of the Galaxy and diamonds indicate the sources in the inner Galaxy. Solid lines show the ranges of masses and Galactocentric distances for sources with large distance discrepancies. Top: calculated mass above 3 × 10²¹ cm^-2. Bottom: mass of the high column density gas, N(H₂) > 10²² cm^-2.