Daily Sunspot Evaluation
Observation Sheet Thursday, 19 October 1967
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)
- 3
- Number of spots (f)
- 9
- Relative number (R)
- 39
- Observer
- SB
- Reading
- all checks consistent
- File
- 19671019.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 17 | 36E | 51 | |||
| 2 | J – 2 | 12 | 62E | 25 | |||
| 3 | J – 1 | -24 | 34W | 121 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.