Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 10
- Number of spots (f)
- 64
- Relative number (R)
- 164
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19911007.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAI – 14 | 19 | 49W | 154 | 52W | 13 | 545 |
| 2 | DAO – 9 | 8 | 25W | 130 | 28W | 8.5 | 553 |
| 3 | AX – 1 | 19 | 03E | 102 | 00 | - | 555 |
| 4 | ? – 18 | -11 | 75W | 180 | 78W | 20 | 539 |
| 5 | CAO – 4 | -19 | 70W | 175 | 73W | 9 | 540 |
| 6 | CAO – 9 | -26 | 49W | 154 | 52W | 11 | 552 |
| 7 | BXO – 3 | -33 | 46W | 151 | 49W | 3 | 556 |
| 8 | BXI – 3 | -15 | 14E | 91 | 11E | 3 | 557 |
| 9 | AX – 1 | -15 | 23E | 82 | 20E | - | 558 |
| 10 | AX – 2 | -18 | 28E | 77 | 25E | 0.5 | 554 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.