| Кол-во пятен | Размер | Класс пятна по магнитуде | Класс пятна по системе Zürich/Macintosh | Координаты | |
|---|---|---|---|---|---|
| 17/12/1999 | 1 | 120 | HSX | S18E78 | |
| 18/12/1999 | 1 | 150 | HAX | S17E66 | |
| 19/12/1999 | 3 | 210 | CHO | S19E54 | |
| 20/12/1999 | 3 | 250 | CHO | S19E43 | |
| 21/12/1999 | 2 | 290 | CHO | S20E29 | |
| 22/12/1999 | 1 | 280 | HHX | S18E15 | |
| 23/12/1999 | 1 | 240 | HSX | S18E02 | |
| 24/12/1999 | 1 | 250 | HHX | S18W11 | |
| 25/12/1999 | 2 | 300 | HHX | S18W25 | |
| 26/12/1999 | 3 | 220 | CHO | S17W38 | |
| 27/12/1999 | 5 | 260 | CHO | S17W51 | |
| 28/12/1999 | 3 | 190 | HSX | S18W64 | |
| 29/12/1999 | 2 | 170 | HSX | S17W78 | |
| 30/12/1999 | 1 | 100 | HSX | S18W91 |
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| Последняя X-вспышка | 08/12/2025 | X1.1 |
| Последняя M-вспышка | 31/12/2025 | M7.11 |
| Последняя геомагнитная буря | 02/01/2026 | Kp5 (G1) |
| Безупречные дни | |
|---|---|
| Последний безупречный день | 08/06/2022 |
| Среднемесячное количество солнечных пятен | |
|---|---|
| декабря 2025 | 124 +32.2 |
| января 2026 | 111.2 -12.8 |
| Последние 30 дней | 106.5 -1.5 |