Daily Sunspot Evaluation
Observation Sheet Friday, 6 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)
- 6
- Number of spots (f)
- 57
- Relative number (R)
- 117
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19790406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | -25 | 64E | 204 | 61E | 207 | |
| 2 | A – 1 | -13 | 02W | 270 | 05W | 211 | |
| 3 | B – 5 | -10 | 45W | 283 ⚠ | 18W | 201 | |
| 4 | B – 4 | -33 | 45W | 313 | 48W | 206 | |
| 5 | E – 45 | -26 | 50W | 318 | 53W | 192 | |
| 6 | A – 1 | -20 | 69W | 337 | 72W | 194 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.