Daily Sunspot Evaluation
Observation Sheet Sunday, 18 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)
- 5
- Number of spots (f)
- 81
- Relative number (R)
- 131
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19901118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKI – 75 | 19 | 22E | 26 | 20E | 24 | 532 |
| 2 | AX – 1 | 24 | 44E | 4 | 42E | 536 | |
| 3 | ? – 1 | -30 | 80W | 128 | 82W | 522 | |
| 4 | CAO – 3 | -21 | 54W | 102 | 56W | 7 | 531 |
| 5 | HS – 1 | -18 | 64E | 344 | 62E | 2 | 535 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.