Relations between photospheric parameters during Pulse III (Flare II), where the slices with ΔBIC > 2 are included. Top panel: the L_BB–Γ_BB plane for Pulse III (Flare II), where the dashed line represents the relation ﹩{{\rm{\Gamma }}}_{{\rm{BB}}}\propto {L}_{{\rm{BB}}}^{0.27}﹩. Bottom panel: relation between kT and L_BB, where the solid line represents the fitting result L_BB ∼ kT^2.54±0.17 and the dashed line represents L_BB ∼ kT⁴.