Daily Sunspot Evaluation
Observation Sheet Wednesday, 1 February 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)
- 27
- Relative number (R)
- 77
- Observer
- PO
- Reading
- all checks consistent
- File
- 19610201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 6 | 22 | 22E | ||||
| 2 | A – 2 | -7 | 65E | ||||
| 3 | A – 2 | -16 | 54E | ||||
| 4 | D – 1 | 8 | 85W | ||||
| 5 | H – 16 | 10 | 21W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.