Daily Sunspot Evaluation
Observation Sheet Saturday, 25 March 1961
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)
- 34
- Relative number (R)
- 94
- Observer
- AB
- Reading
- all checks consistent
- File
- 19610325.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 13 | 8 | 12E | ||||
| 2 | C – 4 | 6 | 25E | ||||
| 3 | ? – 1 | -15 | 85E | ||||
| 4 | A – 1 | -19 | 12W | ||||
| 5 | D – 12 | 4 | 52W | ||||
| 6 | C – 3 | 9 | 50W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.