ν_sF_ν(ν_s) versus the curvature parameter b throughout the MWL campaign obtained from log-parabola fits to simultaneous Swift-XRT, Swift-UVOT and Swift-BAT observations. As in Fig. 12, blue square markers indicate fits that result in a p-value above 10⁻³. Data points in violet triangles correspond to a p-value between 10⁻³ and 10⁻⁴, and red diamond markers have a p-value lower than 10⁻⁴. The black dotted line is a linear fit to the data, and the obtained slope is indicated on the plot.