Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 October 1966
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)
- 5
- Number of spots (f)
- 20
- Relative number (R)
- 70
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19661012.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 16 | 24E | 245 ⚠ | |||
| 2 | J – 1 | 6 | 6E | 216 ⚠ | |||
| 3 | D – 3 | 22 | 48W | 5 | |||
| 4 | C – 8 | 27 | 38W | 355 | |||
| 5 | D – 6 | 23 | 24W | 341 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.