Daily Sunspot Evaluation
Observation Sheet Sunday, 23 July 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)
- 5
- Number of spots (f)
- 43
- Relative number (R)
- 93
- Observer
- AK
- Reading
- all checks consistent
- File
- 19610723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 23 | 7 | 27E | ||||
| 2 | A – 1 | -5 | 39W | ||||
| 3 | B – 10 | 1 | 1W | ||||
| 4 | B – 7 | 9 | 30W | ||||
| 5 | A – 2 | 20 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.