Daily Sunspot Evaluation
Observation Sheet Thursday, 13 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)
- 7
- Number of spots (f)
- 88
- Relative number (R)
- 158
- Observer
- TK
- Reading
- all checks consistent
- File
- 19920213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 6 | 21 | 62W | 267 | 64W | 10 | 69 |
| 2 | FKC – 26 | 12 | 12W | 217 | 14W | 18 | 57 |
| 3 | CAO – 7 | 14 | 15E | 190 | 13E | 9.5 | 65 |
| 4 | DAO – 8 | -5 | 63W | 268 | 65W | 5 | 58 |
| 5 | CAI – 14 | -18 | 46W | 249 | 46W | 12 | 68 |
| 6 | HA – 1 | -10 | 07E | 198 | 05E | 0.5 | 66 |
| 7 | DKI – 26 | -13 | 24E | 181 | 22E | 8 | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.