Daily Sunspot Evaluation
Observation Sheet Friday, 14 April 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)
- 4
- Number of spots (f)
- 15
- Relative number (R)
- 55
- Observer
- MH
- Reading
- all checks consistent
- File
- 19610414.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 14 | 32E | ||||
| 2 | J – 2 | 4 | 39E | ||||
| 3 | B – 4 | -29 | 14E | ||||
| 4 | ? – 1 | -5 | 72W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.