Daily Sunspot Evaluation
Observation Sheet Monday, 13 February 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)
- 5
- Number of spots (f)
- 15
- Relative number (R)
- 65
- Observer
- DK
- Reading
- all checks consistent
- File
- 19670213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 14 | 12°E | 110 | |||
| 2 | J – 1 | 13 | 39°E | 82 | |||
| 3 | J – 1 | -24 | 73°E | 49 | |||
| 4 | J – 1 | 14 | 73°W | 135 | |||
| 5 | D – 9 | 13 | 47°W | 169 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.