Daily Sunspot Evaluation
Observation Sheet Saturday, 28 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)
- 8
- Number of spots (f)
- 106
- Relative number (R)
- 186
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790428.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 42 | 18 | 04E | 333 | 02E | 234 | |
| 2 | A – 1 | 10 | 03E | 334 | 01E | 244 | |
| 3 | C – 10 | 25 | 39E | 298 | 37E | 239 | |
| 4 | F – 16 | 15 | 57E | 280 | 54E | 238 | |
| 5 | D – 2 | -30 | 30E | 307 | 28E | 242 | |
| 6 | H – 20 | -24 | 18E | 319 | 16E | 237 | |
| 7 | C – 12 | -23 | 01E | 336 | 01W | 240 | |
| 8 | A – 3 | 21 | 28W | 5 | 30W | 231 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.