Daily Sunspot Evaluation
Observation Sheet Sunday, 10 August 1969
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)
- 8
- Number of spots (f)
- 36
- Relative number (R)
- 116
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 8 | 74E | 290 | |||
| 2 | A – 1 | -15 | 64E | 300 | |||
| 3 | D – 7 | -32 | 0 | 4 | |||
| 4 | C – 11 | -24 | 47W | 51 | |||
| 5 | J – 2 | -15 | 49W | 53 | |||
| 6 | H – 3 | -12 | 65W | 69 | |||
| 7 | ? – 8 | 9 | 59W | 63 | |||
| 8 | A – 2 | 14 | 57W | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.