Daily Sunspot Evaluation
Observation Sheet Friday, 10 April 1970
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)
- 109
- Relative number (R)
- 209
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700410.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 11 | 17 | 35°E | 5 | |||
| 2 | J – 1 | -1 | 11°E | 29 | |||
| 3 | A – 1 | -13 | 43°E | 357 | |||
| 4 | E – 40 | -12 | 11°W | 54 | |||
| 5 | G – 3 | -15 | 49°W | 89 | |||
| 6 | E – 13 | 8 | 52°W | 92 | |||
| 7 | A – 6 | 15 | 54°W | 94 | |||
| 8 | A – 1 | 6 | 29°W | 69 | |||
| 9 | J – 1 | 20 | 50°W | 90 | |||
| 10 | E – 32 | 10 | 16°W | 56 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.