Daily Sunspot Evaluation
Observation Sheet Sunday, 11 February 1979
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)
- 12
- Number of spots (f)
- 158
- Relative number (R)
- 278
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 19 | 58E | 201 | 56E | 94 | |
| 2 | J – 1 | 12 | 47E | 212 | 45E | 95 | |
| 3 | A – 1 | -9 | 42E | 217 | 40E | 101 | |
| 4 | C – 12 | -13 | 18E | 241 | 16E | 104 | |
| 5 | B – 7 | -22 | 40E | 219 | 38E | 103 | |
| 6 | C – 19 | -18 | 24E | 235 | 22E | 91 | |
| 7 | A – 1 | -24 | 42E | 217 | 40E | 102 | |
| 8 | C – 10 | -36 | 36E | 223 | 34E | 97 | |
| 9 | D – 27 | -21 | 16W | 275 | 18W | 92 | |
| 10 | C – 9 | -23 | 27W | 286 | 29W | 85 | |
| 11 | C – 8 | -18 | 32W | 291 | 34W | 100 | |
| 12 | F – 62 | 14 | 31W | 290 | 33W | 84 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.