Daily Sunspot Evaluation
Observation Sheet Monday, 9 January 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)
- 15
- Relative number (R)
- 45
- Observer
- BG
- Reading
- all checks consistent
- File
- 19610109.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 8 | 7E | ||||
| 2 | C – 8 | -10 | 33E | ||||
| 3 | H – 6 | 28 | 40W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.