To summarize we have obtained some new results as listed here. In many cases we talked about Coulomb collisions and weak diffusion. But using the relative spectral variation fo the flux, we figured that it should have opposite energy dependence than Coulomb collisions, the decay rate is explicable if we use a very small loss cone angle, i.e. highly inhomogeneous loop.
And so on. This tells that some new aspect of the problem could be revealed when microwave spectral and HXR spectral are analyzed in detail together.

So we want to close the argument. By far the model was self-consistent. But except one parameter. We found that the gradual population is larger than that of impulsive population. This is not possible under the traditional up-down picture. But quite possible under the opposite case, I.e. down-up picture The small loop has both thick target and the accelerator. This is quite a surprising result in HXR studies, but relatively common in optical observations, nowadays. The number in the thick target was higher than the trapped one—suggests alternative scenario, namely down-up scenario. The right panel: SXT large loop, small loop retain the thick target bremsstrahlung, Radio was just sensitive to this trapped electrons. HXR—again one example to demonstrate the complementary nature. and This was one event in which the spectral and spatial informations are combined to address the electron transport problem and time-dependent injection.