Daily Sunspot Evaluation
Observation Sheet Saturday, 25 July 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)
- 9
- Number of spots (f)
- 105
- Relative number (R)
- 195
- Observer
- HA
- Reading
- all checks consistent
- File
- 19700725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 7 | 22 | 35E | 42 | |||
| 2 | D – 24 | 17 | 32E | 45 | |||
| 3 | A – 1 | 13 | 65E | 12 | |||
| 4 | A – 2 | 9 | 78E | 359 | |||
| 5 | A – 4 | -3 | 55E | 22 | |||
| 6 | ? – 3 | -9 | 76E | 1 | |||
| 7 | G – 5 | -14 | 32E | 45 | |||
| 8 | C – 8 | -22 | 35E | 42 | |||
| 9 | F – 51 | 9 | 12W | 89 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.