Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 November 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)
- 9
- Number of spots (f)
- 42
- Relative number (R)
- 132
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19911119.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 10 | 01E | 257 | 02W | - | 641 |
| 2 | AR – 1 | 6 | 31E | 227 | 28E | 0.5 | 635 |
| 3 | DAC – 5 | -11 | 63W | 321 | 66W | 10 | 630 |
| 4 | AX – 1 | -15 | 36W | 294 | 39W | - | 642 |
| 5 | BRI – 16 | -7 | 07E | 251 | 04E | 2.5 | 643 |
| 6 | DAI – 11 | -16 | 21E | 237 | 18E | 8.5 | 633 |
| 7 | DAO – 4 | -10 | 60E | 198 | 57E | 10.5 | 640 |
| 8 | AX – 1 | -7 | 77E | 181 | 74E | - | 644 |
| 9 | AX – 2 | -11 | 78E | 180 | 75E | 1 | 645 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.