Daily Sunspot Evaluation
Observation Sheet Saturday, 13 October 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)
- 11
- Number of spots (f)
- 57
- Relative number (R)
- 167
- Observer
- MB
- Reading
- all checks consistent
- File
- 20011013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 13 | 13W | 63 | 15W | 2.5 | |
| 2 | HR – 2 | 23 | 12E | 38 | 10E | ≥0.5 | |
| 3 | DAO – 9 | 9 | 25E | 25 | 23E | ~5 | |
| 4 | EKI – 13 | 16 | 53E | 357 | 51E | ~11 | |
| 5 | AX – 2 | -6 | 58W | 108 | 60W | ~1 | |
| 6 | HR – 1 | -27 | 49W | 99 | 51W | ~0.5 | |
| 7 | HA – 8 | -22 | 31W | 81 | 33W | 3.5 | |
| 8 | DAO – 7 | -22 | 16W | 66 | 18W | 4 | |
| 9 | DAO – 5 | -13 | 22E | 28 | 20E | 5.5 | |
| 10 | CAO – 7 | -16 | 33E | 17 | 31E | ~5 | |
| 11 | HR – 1 | -14 | 46E | 4 | 44E | ≥0.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.