Daily Sunspot Evaluation
Observation Sheet Tuesday, 26 September 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)
- 6
- Number of spots (f)
- 36
- Relative number (R)
- 96
- Observer
- ET
- Reading
- all checks consistent
- File
- 19610926.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 13 | 83E | ||||
| 2 | ? – 8 | 12 | 62E | ||||
| 3 | B – 10 | 4 | 37E | ||||
| 4 | D – 15 | 7 | 39W | ||||
| 5 | A – 1 | 2 | 76W | ||||
| 6 | J – 1 | 18 | 59W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.