Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 November 1990
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)
- 7
- Number of spots (f)
- 46
- Relative number (R)
- 116
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19901113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CKI – 7 | 16 | 36W | 150 | 38W | 10 | 517 |
| 2 | EAI – 11 | 8 | 16W | 130 | 19W | 11 | 524 |
| 3 | ? – 2 | 18 | 85E | 29 | 82E | 12 | 532 |
| 4 | AX – 1 | -27 | 27W | 141 | 30W | - | 530 |
| 5 | AX – 4 | -17 | 19W | 133 | 22W | 3 | 533 |
| 6 | FKC – 19 | -31 | 12W | 126 | 15W | 15 | 528 |
| 7 | AX – 2 | -22 | 16E | 98 | 13E | 0.5 | 531 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.