Daily Sunspot Evaluation
Observation Sheet Sunday, 10 September 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)
- 7
- Number of spots (f)
- 48
- Relative number (R)
- 118
- Observer
- DK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 6 | 13 | 53E | 189 | |||
| 2 | C – 7 | -23 | 21E | 221 | |||
| 3 | H – 11 | -21 | 15E | 228 | |||
| 4 | J – 3 | -23 | 20W | 262 | |||
| 5 | A – 3 | -23 | 43W | 285 | |||
| 6 | ? – 1 | 27 | 82W | 324 | |||
| 7 | E – 17 | 25 | 30W | 372 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.