Spectral energy distribution of SBS NLS1s. The dotted lines show the SED for each individual object. (a) A wide spread of indices (﹩-0.93< \alpha _{\mathrm{ox}\,}< 2.01﹩) is observed. The thick solid line represents the mean overall SED. Assuming a power‐law fit for the soft X‐ray–to–optical region, we get a mean value of ﹩\alpha _{\mathrm{ox}\,}=-1.33﹩. (b) In this case, the SEDs of typical radio‐loud QSOs, radio‐quiet QSOs, and Seyfert galaxies are shown for comparison.