Daily Sunspot Evaluation
Observation Sheet Saturday, 19 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)
- 6
- Number of spots (f)
- 52
- Relative number (R)
- 112
- Observer
- TA
- Reading
- all checks consistent
- File
- 19911019.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 6 | 69W | 16 | 72W | 2 | 565 |
| 2 | BXO – 5 | 16 | 57W | 4 | 60W | 6 | 562 |
| 3 | BRI – 32 | 22 | 10E | 297 | 07E | 15 | 575 |
| 4 | DAC – 6 | -22 | 62W | 9 | 65W | 6 | 562 |
| 5 | BRO – 5 | -3 | 33W | 340 | 36W | 6 | 583 |
| 6 | BXI – 3 | -22 | 23W | 330 | 26W | 5.5 | 571 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.