SEDs for the sources: 1015+0318 classified as Older, 2245+0324 classified as GPS-like, and 0845+0439 classified as Mixed. Black dot points are the Effelsberg and low-frequency data from the literature; 3-sigma upper limits are drawn as triangles. Where present, various synchrotron components are plotted with an orange dashed line. The fit of the spectra is the red straight line. Polarisation information is presented with the SEDs.
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