Flux-flux diagram for our SSRQs represented by the rest frame flux density at frequencies corresponding to λ_u for y- and λ_i (see Table 1) for x-axis. The dotted line is the best fit standard accretion disk model with varied mass accretion rates and a constant black hole mass, and the dash-dotted line represents the best fit of a power law. The solid circles with error bars represent the multi-epoch flux data. The end of the figure is available online.