Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 April 1978
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)
- 94
- Relative number (R)
- 204
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19780425.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 29 | 20E | 134 | 17E | ||
| 2 | ? – 3 | 24 | 78E | 76 | 75E | ||
| 3 | A – 1 | -24 | 50E | 104 | 47E | ||
| 4 | C – 12 | -20 | 11W | 165 | 14W | ||
| 5 | A – 2 | -32 | 32W | 186 | 35W | ||
| 6 | D – 14 | -32 | 40W | 184 ⚠ | 43W | ||
| 7 | A – 3 | -26 | 49W | 203 | 52W | ||
| 8 | A – 4 | 16 | 60W | 214 | 63W | ||
| 9 | D – 11 | 14 | 30W | 184 | 33W | ||
| 10 | E – 34 | 19 | 34W | 188 | 37W | ||
| 11 | B – 7 | 23 | 12W | 166 | 15W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.