Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 157
- Relative number (R)
- 277
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 3 | 14 | 68W | 328 | 69W | ~6 | |
| 2 | HS – 1 | 3 | 61W | 321 | 62W | ~2 | |
| 3 | DAC – 12 | 21 | 30W | 290 | 31W | 8 | |
| 4 | HS – 2 | 22 | 18E | 242 | 17E | 1.5 | |
| 5 | DSO – 7 | 12 | 19E | 241 | 18E | 7 | |
| 6 | DAC – 12 | 4 | 29E | 231 | 28E | 7.5 | |
| 7 | FSC – 26 | 13 | 34E | 226 | 33E | 16.5 | |
| 8 | HA – 2 | 3 | 43E | 217 | 42E | ~1 | |
| 9 | HA – 3 | 10 | 76E | 184 | 75E | 3 | |
| 10 | EHC – 52 | -19 | 29W | 289 | 30W | 13.5 | |
| 11 | EKC – 27 | -19 | 13W | 273 | 14W | 10 | |
| 12 | DAO – 10 | -13 | 40E | 220 | 39E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.