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. 2020 Feb 7;47(3):e2019GL086056. doi: 10.1029/2019GL086056

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©2020. The Authors.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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grl60068-fig-0003 — Ground‐based VLF transmitter influence on electron lifetimes manifested in flux measurements, where a local minimum in flux is observed between $L$ = 2–3 at low energy (30–100 keV), producing a bifurcated inner zone. (a–f) Low energy fluxes in $L$ versus time format. (g) Fluxes averaged over the indicated time interval.