Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 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)
- 4
- Number of spots (f)
- 21
- Relative number (R)
- 61
- Observer
- SM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19671017.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 22 | 10E | 104 | |||
| 2 | B – 6 | -17 | 7E | 107 | |||
| 3 | H – 11 | -25 | 8W | 122 | |||
| 4 | ? – 3 | 16 | 30W | 194 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.