Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 January 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)
- 11
- Number of spots (f)
- 72
- Relative number (R)
- 182
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19790117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | 10 | 40E | 216 ⚠ | 09E | 30 | |
| 2 | G – 7 | 19 | 55E | 171 | 54E | 38 | |
| 3 | ? – 1 | -10 | 82E | 144 | 81E | 45 | |
| 4 | C – 8 | -14 | 58E | 168 | 57E | 37 | |
| 5 | E – 24 | -23 | 25W | 351 ⚠ | 26W | 32 | |
| 6 | D – 5 | -27 | 48W | 274 | 49W | 33 | |
| 7 | H – 4 | -23 | 57W | 283 | 58W | 29 | |
| 8 | D – 12 | 15 | 62W | 288 | 63W | 42 | |
| 9 | B – 3 | 10 | 51W | 277 | 52W | 44 | |
| 10 | A – 1 | 13 | 46W | 272 | 47W | 43 | |
| 11 | D – 3 | 20 | 01W | 227 | 02W | 40 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.