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The Argument
1) Electrons, not protons are injected.
2) Radial gradients point to an external source that is NOT the solarwind, NOR the dipole trapped belts.
3) Risetimes are too slow (2 days) to be 1st order acceleration, more likely 2nd order stochastic, ordered by energy dependent exponential risetimes.
4) Neither AE nor Dst correlate as well as Kp. Global disturbances work better than tail or RC.
5) MLT enhancements begin at noon.
6) Low altitude data are consistent with simultaneous inward radial transport & PA scattering