Open Access
Table 1.
Overview of the criteria used to identify the different types of features studied here.
| Type of feature | Elongated | Downflows | Polarity reversal | # in AR 10923 | # in AR 10933 |
|---|---|---|---|---|---|
| Penumbr. fil. (outer penumbra) | Yes | Yes | Yes | 9 | 5 |
| Penumbr. fil. (inner penumbra) | Yes | Yes | Yes | 10 | 10 |
| Long PUD | Yes | Yes | No | 12 | 6 |
| Short PUD | Yes | Unclear | No | 7 | 2 |
| CUD | No | No | No | 11 | 6 |
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