Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 May 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)
- 18
- Relative number (R)
- 58
- Observer
- SK
- Reading
- all checks consistent
- File
- 19670517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 26 | 07E | 329 | |||
| 2 | J – 3 | -13 | 49E | 287 | |||
| 3 | C – 12 | -15 | 00 | 336 | |||
| 4 | A – 2 | 24 | 25W | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.