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Table 1
Overview of the electron spectra used in this study.
| Location of observation | Spacecraft mission/instrument | Source |
|---|---|---|
| Flyby spectra | Pioneer 10 Charged Particle Instrument (CPI) | Teegarden et al. (1974) |
| Ulysses Kiel Electron Telescope (KET) | Heber et al. (2005) | |
| Earth orbit spectra | SOHO/EPHIN | Kühl et al. (2013) |
| Ulysses Kiel Electron Telescope (KET) | Heber et al. (2005) | |
| ISEE 3 (ICE) Chicago electron spectrometer | Moses (1987) | |
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