Daily Sunspot Evaluation
Observation Sheet Wednesday, 21 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)
- 136
- Relative number (R)
- 206
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19901121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 5 | 17 | 62W | 71 | 65W | 6° | 538 |
| 2 | FKC – 107 | 19 | 16W | 25 | 19W | 23° | E1,2,3 |
| 3 | BXO – 6 | 15 | 01W | 10 | 04W | 4° | 532 |
| 4 | AX – 1 | 16 | 10E | 359 | 07E | - | 533 |
| 5 | AX – 1 | 20 | 11E | 358 | 08E | - | 536 |
| 6 | DAI – 13 | -17 | 36W | 45 | 39W | 6.5 | 539 |
| 7 | HA – 3 | -18 | 23E | 346 | 20E | 3° | 550 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.