Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 January 1968
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)
- 30
- Relative number (R)
- 100
- Observer
- SM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19680116.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -14 | 55E | 237 ⚠ | |||
| 2 | A – 1 | -24 | 65W | 57 | |||
| 3 | ? – 2 | 9 | 90W | 82 | |||
| 4 | D – 7 | 8 | 43W | 36 | |||
| 5 | H – 4 | 15 | 66W | 58 | |||
| 6 | H – 13 | 21 | 38W | 30 | |||
| 7 | B – 2 | 0 | 1W | 353 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.