Spectral energy distribution of the radio emission between 0.88 GHz and 219 GHz from SMGPS, RACS, ALMAGAL, and the new data presented in this paper. The dashed green line is the best linear fit between 0.88 and 1.65 GHz including all the data points; the dashed red line is the best linear fit between 0.88 and 1.65 GHz if the SMGPS point at 1.65 GHz is removed; the dashed purple line is the best fit of the 150 and 219 GHz flux, after removing the free-free contamination assuming the green fit; and the dashed yellow line is the same as the purple one, but calculating the free-free contamination using the dashed red line.