Daily Sunspot Evaluation
Observation Sheet Monday, 24 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)
- 3
- Number of spots (f)
- 39
- Relative number (R)
- 69
- Observer
- PO
- Reading
- all checks consistent
- File
- 19610724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 24 | 8 | 12E | ||||
| 2 | D – 8 | 1 | 15W | ||||
| 3 | C – 7 | 9 | 44W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.