Daily Sunspot Evaluation
Observation Sheet Wednesday, 6 February 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)
- 8
- Number of spots (f)
- 46
- Relative number (R)
- 126
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19910206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 21 | 45W | 117 | 46W | 2 | 52 |
| 2 | AR – 1 | 24 | 33W | 105 | 34W | 1.5 | 53 |
| 3 | HH – 1 | 15 | 46E | 26 | 45E | 3 | 59 |
| 4 | HK – 5 | 14 | 65E | 7 | 64E | 5 | 61 |
| 5 | FKC – 27 | -12 | 71W | 143 | 72W | 18 | 48 |
| 6 | DSO – 2 | -16 | 50W | 122 | 51W | 7 | 56 |
| 7 | EAC – 5 | -10 | 09E | 63 | 08E | 12.5 | 57 |
| 8 | DAO – 3 | -22 | 21E | 51 | 20E | 3 | 58 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.