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Table 2.
Radial gradients of ACR helium (%/au) between 0.5 and 1 au during the solar activity minimum 2024–25.
| Orbit number | 1 | 2 | 3 | 4 | Average (1–3) |
|---|---|---|---|---|---|
| 20200228- | 20201012- | 20210602- | 20211216- | ||
| Energy (MeV/nuc) | 20201012 | 20210602 | 20211216 | 20220704 | |
| 11.1–19.4 | 29 ± 8 | 35 ± 8 | 21 ± 15 | 10 ± 27 | 28 ± 6 |
| 19.4–29.5 | 19 ± 7 | 22 ± 13 | 8 ± 14 | 21 ± 21 | 17 ± 7 |
| 29.5–41.2 | 5 ± 15 | 6 ± 15 | 38 ± 19 | 23 ± 37 | 17 ± 9 |
| 41.2–49.0 | 5 ± 8 | 22 ± 13 | 51 ± 16 | 26 ± 31 | 26 ± 7 |
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