Daily Sunspot Evaluation
Observation Sheet Friday, 25 September 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)
- 12
- Number of spots (f)
- 74
- Relative number (R)
- 194
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590925.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 18 | 76E | ||||
| 2 | C – 3 | -7 | 66E | ||||
| 3 | B – 3 | -20 | 32E | ||||
| 4 | B – 6 | -10 | 4E | ||||
| 5 | J – 1 | -10 | 3W | ||||
| 6 | H – 21 | -9 | 11W | ||||
| 7 | A – 1 | -14 | 33W | ||||
| 8 | ? – 2 | -11 | 73W | ||||
| 9 | J – 6 | 4 | 40W | ||||
| 10 | A – 4 | 31 | 28W | ||||
| 11 | J – 2 | 29 | 15W | ||||
| 12 | D – 23 | 27 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.