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Table 1.
Periods when Solar Orbiter was positioned between 0.95 and 1 au.
| No. | Start time | End time | Distance to Earth (au) | Ratio (HET/EPHIN) |
|---|---|---|---|---|
| 1 | 2020-02-28 | 2020-03-16 | 0.07 | 1.10 ± 0.05 |
| 2 | 2020-09-14 | 2020-11-10 | 1.76 | 1.10 ± 0.03 |
| 3 | 2021-05-27 | 2021-06-09 | 1.49 | 0.90 ± 0.06 |
| 4 | 2021-11-21 | 2022-01-15 | 0.13 | 1.08 ± 0.04 |
| 5 | 2022-06-05 | 2022-08-02 | 1.96 | 1.0 ± 0.06 |
Notes. The radial distances between Solar Orbiter and Earth are listed in the fourth column. SEP events and ICME periods were excluded from the spectra comparison. The last column gives the averaged intensity ratio between HET and EPHIN.
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