Fig. 2.

$L$-time diagram of different plasma/particles in the inner magnetosphere obtained from Arase observations. (a) electron density (PWE/HFA), (b) 11 keV/q proton flux (LEPi), (c) 52 keV/q proton flux (MEPi), (d) 10 keV electron flux (LEPe), (e) 50 keV electron flux (MEPe), (f) 214 keV electron flux (HEP), (g) 2000 keV electron flux (XEP), and (h) the Sym-H index. The apogees MLT of Arase are 06:00 (March 2017, May 2018, September 2019), 24:00 (June 2017, October 2018, December 2019), 18:00 (November 2017, February 2019, May 2020) and 12:00 (February 2018, June 2019, September 2020). Note that large flux below $L\sim 2$ at HEP (f) is contamination of the background population