Peak polarized intensity vs. total intensity (left panel) and degree of polarization vs. peak polarized intensity (right panel) for three catalogs: in gray the LoTSS-DR2 RM grid catalog of O’Sullivan et al. (2023); in black the polarized sources in ELAIS-N1 at 150 MHz (this work); in orange the values for sources in the DRAO ELAIS-N1 catalog, where both I and P have been converted from 1.4 GHz to 150 MHz using the spectral indices given by Grant et al. (2010). The diagonal lines correspond to the indicated degrees of polarization.