Daily Sunspot Evaluation
Observation Sheet Monday, 8 February 1971
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)
- 7
- Number of spots (f)
- 27
- Relative number (R)
- 97
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 7 | 15 | 12E | 333 | |||
| 2 | J – 2 | 18 | 49E | 296 | |||
| 3 | A – 1 | -14 | 72W | 57 | |||
| 4 | H – 4 | -6 | 30W | 15 | |||
| 5 | ? – 2 | 8 | 78W | 63 | |||
| 6 | ? – 10 | 25 | 72W | 57 | |||
| 7 | A – 1 | 5 | 13W | 358 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.