Qualitatively, all three sets of experiments indicate a decrease in σ and S with temperature, consistent with our predictions. Unfortunately, the majority of these papers do not separate the thermal conductivity into electronic and lattice contributions, but the measurements in Ref. suggest values on < 1 W m -1 K -1 at 1000 K and n on the order of 10 20 cm -3 , which is consistent with our predictions.