Daily Sunspot Evaluation
Observation Sheet Monday, 25 January 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)
- 6
- Number of spots (f)
- 70
- Relative number (R)
- 130
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19710125.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 7 | 12 | 01E | 168 | |||
| 2 | E – 10 | -13 | 70E | 39 ⚠ | |||
| 3 | E – 23 | -12 | 22W | 191 | |||
| 4 | E – 21 | 18 | 53W | 222 | |||
| 5 | C – 5 | 8 | 27W | 196 | |||
| 6 | J – 4 | 18 | 39W | 208 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.