Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 October 1991
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)
- 33
- Relative number (R)
- 103
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19911022.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 4 | 10 | 24E | 243 | 21E | 3 | 591 |
| 2 | HA – 1 | 19 | 68E | 199 | 65E | 2 | 592 |
| 3 | BRO – 7 | -11 | 42W | 309 | 45W | 5 | 588 |
| 4 | BXI – 9 | -15 | 37W | 304 | 40W | 4.5 | 586 |
| 5 | AX – 1 | -22 | 34W | 301 | 37W | 587 | |
| 6 | BXI – 7 | -16 | 33E | 234 | 30E | 6 | 590 |
| 7 | ? – 4 | -10 | 83E | 184 | 80E | 593 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.