Daily Sunspot Evaluation
Observation Sheet Friday, 19 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)
- 3
- Number of spots (f)
- 8
- Relative number (R)
- 38
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680119.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -12 | 57E | 256 | |||
| 2 | D – 6 | -15 | 61E | 252 | |||
| 3 | ? – 1 | 21 | 80W | 33 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.