Daily Sunspot Evaluation
Observation Sheet Monday, 20 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)
- 17
- Relative number (R)
- 57
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19691020.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 10 | 10 | 80E | 65 | |||
| 2 | H – 5 | 10 | 60E | 85 | |||
| 3 | A – 1 | -12 | 05E | 140 | |||
| 4 | J – 1 | -31 | 53W | 198 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.