Daily Sunspot Evaluation
Observation Sheet Friday, 13 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)
- 5
- Number of spots (f)
- 50
- Relative number (R)
- 100
- Observer
- LT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19671013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | -25 | 45E | 121 | |||
| 2 | J – 2 | -25 | 53W | 225 ⚠ | |||
| 3 | D – 9 | 17 | 53W | 219 | |||
| 4 | H – 36 | 16 | 29W | 195 | |||
| 5 | A – 1 | 21 | 45W | 211 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.