Daily Sunspot Evaluation
Observation Sheet Friday, 24 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)
- 7
- Number of spots (f)
- 51
- Relative number (R)
- 121
- Observer
- SK
- Reading
- all checks consistent
- File
- 19700424.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 12 | 22E | 192 | |||
| 2 | D – 16 | -9 | 16W | 230 | |||
| 3 | G – 2 | -8 | 61W | 275 | |||
| 4 | E – 22 | 2 | 64W | 278 | |||
| 5 | A – 1 | 15 | 48W | 262 | |||
| 6 | B – 3 | 8 | 16W | 230 | |||
| 7 | A – 5 | 19 | 05W | 219 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.