Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 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)
- 7
- Number of spots (f)
- 28
- Relative number (R)
- 98
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 9 | 53E | 284 | |||
| 2 | ? – 1 | -16 | 80E | 257 | |||
| 3 | B – 5 | -14 | 35E | 302 | |||
| 4 | D – 8 | -31 | 26W | 3 | |||
| 5 | ? – 9 | -20 | 71W | 48 | |||
| 6 | A – 1 | 14 | 64W | 41 | |||
| 7 | A – 1 | 15 | 35W | 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.