Daily Sunspot Evaluation
Observation Sheet Saturday, 22 September 2001
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 12
- Number of spots (f)
- 132
- Relative number (R)
- 252
- Observer
- MB
- Reading
- all checks consistent
- File
- 20010922.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRO – 9 | 7 | 34W | 1 | 37W | ~6 | |
| 2 | DAI – 25 | 11 | 22W | 349 | 25W | ~10 | |
| 3 | AX – 2 | 26 | 03W | 330 | 06W | ~0.5 | |
| 4 | DAO – 16 | 14 | 02E | 325 | 01W | ~8 | |
| 5 | CAI – 9 | 26 | 08E | 319 | 05E | ~6 | |
| 6 | HS – 1 | 2 | 10E | 317 | 07E | ~2 | |
| 7 | HA – 4 | 3 | 27E | 300 | 24E | ~1 | |
| 8 | ? – 1 | 22 | 85E | 242 | 82E | ? | |
| 9 | HS – 3 | -12 | 65W | 32 | 68W | ~2.5 | |
| 10 | CRO – 11 | -11 | 50W | 17 | 53W | ~8 | |
| 11 | FAC – 41 | -17 | 36E | 291 | 33E | 18 | |
| 12 | DKC – 10 | -18 | 54E | 273 | 51E | ~8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.