Daily Sunspot Evaluation
Observation Sheet Saturday, 7 February 1959
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)
- 9
- Number of spots (f)
- 39
- Relative number (R)
- 129
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 10 | 3E | ||||
| 2 | A – 3 | 14 | 13E | ||||
| 3 | C – 7 | 8 | 12E | ||||
| 4 | J – 1 | 30 | 42E | ||||
| 5 | C – 10 | 24 | 36E | ||||
| 6 | H – 9 | 20 | 40E | ||||
| 7 | A – 2 | -13 | 8W | ||||
| 8 | H – 3 | 13 | 53W | ||||
| 9 | B – 3 | 22 | 45W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.