Daily Sunspot Evaluation
Observation Sheet Friday, 14 January 1972
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)
- 13
- Relative number (R)
- 53
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720114.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | -10 | 71E | 105 | |||
| 2 | ? – 4 | -14 | 81E | 95 | |||
| 3 | C – 5 | -9 | 22W | 198 | |||
| 4 | J – 2 | -13 | 43W | 219 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.