Daily Sunspot Evaluation
Observation Sheet Sunday, 12 October 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)
- 4
- Number of spots (f)
- 20
- Relative number (R)
- 60
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19691012.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 7 | -16 | 26W | 276 | |||
| 2 | ? – 7 | 20 | 81W | 331 | |||
| 3 | J – 2 | 27 | 49W | 299 | |||
| 4 | H – 4 | 11 | 05W | 255 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.