Daily Sunspot Evaluation
Observation Sheet Friday, 11 January 1974
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
- FA
- Reading
- all checks consistent
- File
- 19740111.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 11 | 38E | 249 | |||
| 2 | H – 4 | -11 | 41E | 246 | |||
| 3 | H – 1 | -16 | 70E | 217 | |||
| 4 | D – 12 | 7 | 24W | 311 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.