Daily Sunspot Evaluation
Observation Sheet Thursday, 9 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)
- 4
- Number of spots (f)
- 24
- Relative number (R)
- 64
- Observer
- KA
- Reading
- all checks consistent
- File
- 19610309.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 8 | -6 | 68E | ||||
| 2 | B – 4 | -15 | 45W | ||||
| 3 | B – 5 | -11 | 22W | ||||
| 4 | B – 7 | 8 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.