Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 January 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)
- 63
- Relative number (R)
- 123
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19910109.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 8 | 70W | 152 | 71W | 2 | 3 |
| 2 | AR – 2 | 6 | 33E | 49 | 32E | 1 | 21 |
| 3 | FKC – 31 | 15 | 65E | 17 | 64E | 22 | 22 |
| 4 | EKI – 17 | -11 | 65W | 147 | 66W | 10.5 | 23 |
| 5 | BXO – 9 | -18 | 36W | 118 | 37W | 5.5 | 24 |
| 6 | BRO – 3 | -13 | 07E | 75 | 06E | 2.5 | 15 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.