Daily Sunspot Evaluation
Observation Sheet Sunday, 6 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)
- 106
- Relative number (R)
- 176
- Observer
- HE
- Reading
- all checks consistent
- File
- 19911006.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 19 | 19 | 36W | 154 | 38W | 13 | 545 |
| 2 | DAO – 12 | 9 | 11W | 129 | 13W | 9.5 | 553 |
| 3 | FKC – 47 | -11 | 61W | 179 | 63W | 18 | 533 |
| 4 | CAI – 6 | -18 | 58W | 176 | 60W | 12 | 540 |
| 5 | DAO – 9 | -25 | 38W | 156 | 40W | 9 | 552 |
| 6 | BXI – 8 | -2 | 07E | 111 | 05E | 8 | 551 |
| 7 | BRO – 5 | -18 | 39E | 79 | 37E | 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.