Width of the average profile in the B-mode between two half-maximum points, w ≡ φ_sep(ν) + FWHM(ν). The cyan diamonds are the measurements of profile width from Deshpande & Rankin (2001). The green and red circles are from our data (both LBA and HBA), fitted with the OC and MC models, respectively. At frequencies below 40 MHz the profile width is somewhat affected by intra-channel dispersive smearing. The most simple model is shown by the black line: it assumes φ_sep from the LBA fit and the FWHM derived from the LBA data above 40 MHz.