Ratio of the data to the model for the best fit of 5 of the 16 multiwavelength observations (radio–X-ray) of the rising phase of the 2010 outburst (MJD 55217 in blue, 55259 in red, 55271 in black, 55288 in green, and 55292 in violet). Only five ratios are shown for purposes of visualization, but the best fit was obtained by using all the simultaneous or quasi-simultaneous radio–X-ray observation, fixing the JED-SAD parameters to the best fitting values obtained by fitting the X-ray spectra first, and then fitting the radio points with Eq. (2).