Daily Sunspot Evaluation
Observation Sheet Friday, 27 April 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)
- 10
- Number of spots (f)
- 77
- Relative number (R)
- 177
- Observer
- GA
- Reading
- all checks consistent
- File
- 19790427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 32 | 18 | 18E | 332 | 15E | 234 | |
| 2 | C – 6 | 25 | 54E | 296 | 51E | 239 | |
| 3 | F – 7 | 16 | 68E | 282 | 65E | 238 | |
| 4 | H – 12 | -24 | 33E | 317 | 30E | 237 | |
| 5 | B – 4 | -30 | 46E | 304 | 43E | 242 | |
| 6 | B – 8 | -24 | 17E | 333 | 14E | 240 | |
| 7 | J – 1 | 4 | 59W | 49 | 62W | 226 | |
| 8 | A – 1 | 20 | 20W | 10 | 23W | 241 | |
| 9 | A – 5 | 21 | 14W | 4 | 17W | 231 | |
| 10 | A – 1 | 23 | 02W | 352 | 05W | 243 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.