Daily Sunspot Evaluation
Observation Sheet Sunday, 29 September 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)
- 133
- Relative number (R)
- 203
- Observer
- MB
- Reading
- all checks consistent
- File
- 19910929.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 12 | 72W | 282 | 75W | - | 534 |
| 2 | BRO – 6 | 12 | 42W | 252 | 45W | 3 | 548 |
| 3 | CAI – 15 | 17 | 57E | 153 | 54E | 6 | 545 |
| 4 | BXI – 14 | -10 | 44W | 254 | 47W | 5 | 529 |
| 5 | EAO – 24 | -7 | 10E | 200 | 07E | 14 | 536 |
| 6 | FKC – 45 | -12 | 27E | 183 | 24E | 20 | 533 |
| 7 | CAI – 28 | -20 | 38E | 172 | 35E | 8 | 540 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.