Daily Sunspot Evaluation
Observation Sheet Thursday, 13 November 1975
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)
- 3
- Number of spots (f)
- 9
- Relative number (R)
- 39
- Observer
- FA
- Reading
- all checks consistent
- File
- 19751113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 6 | 39E | 31 | 36E | ||
| 2 | C – 5 | 2 | 35W | 105 | 38W | ||
| 3 | A – 1 | 0 | 33W | 103 | 36W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.