Daily Sunspot Evaluation
Observation Sheet Saturday, 10 February 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)
- 84
- Relative number (R)
- 194
- Observer
- MB
- Reading
- all checks consistent
- File
- 20010210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 26 | 75W | 121 | 77W | ~1 | |
| 2 | HR – 1 | 22 | 68W | 114 | 70W | ~1 | |
| 3 | DAO – 13 | 23 | 34W | 80 | 36W | 13 | |
| 4 | AX – 1 | 2 | 20W | 66 | 22W | ||
| 5 | CAO – 13 | 22 | 17W | 63 | 19W | 12.5 | |
| 6 | AX – 1 | 83 | 08W | 54 | 10W | ||
| 7 | CSO – 13 | 3 | 03E | 43 | 01E | ~15.5 | |
| 8 | BXO – 4 | 12 | 15E | 31 | 13E | 3 | |
| 9 | DAO – 4 | 10 | 62E | 344 | 60E | ~4 | |
| 10 | HA – 1 | 32 | 75E | 331 | 73E | ~2 | |
| 11 | EKC – 32 | -7 | 04W | 50 | 06W | ~16.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.