Daily Sunspot Evaluation
Observation Sheet Friday, 7 February 1992
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)
- 53
- Relative number (R)
- 133
- Observer
- YK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 7 | 32W | 345 ⚠ | 33W | 0.5 | 47 |
| 2 | EAO – 11 | 12 | 65E | 218 | 64E | 13 | 57 |
| 3 | HA – 1 | -22 | 57W | 340 | 58W | 1 | 63 |
| 4 | CKI – 15 | -17 | 53W | 336 | 54W | 13 | 48 |
| 5 | AX – 1 | -15 | 41W | 324 | 42W | - | 61 |
| 6 | CKI – 21 | -12 | 22W | 305 | 23W | 14 | 46 |
| 7 | AX – 1 | -26 | 18W | 301 | 19W | 0.5 | 52 |
| 8 | AX – 2 | -6 | 16E | 267 | 15E | 0.5 | 58 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.