Daily Sunspot Evaluation
Observation Sheet Tuesday, 10 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)
- 5
- Number of spots (f)
- 25
- Relative number (R)
- 75
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790410.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 9 | 20 | 31°E | 182 | 30°E | 212 | |
| 2 | H – 2 | 5 | 67E | 146 | 66E | 215 | |
| 3 | J – 2 | -26 | 12E | 201 | 11E | 207 | |
| 4 | A – 5 | -27 | 25W | 238 | 26W | 214 | |
| 5 | B – 7 | -13 | 60W | 273 | 61W | 211 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.