Daily Sunspot Evaluation
Observation Sheet Monday, 29 April 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)
- 3
- Number of spots (f)
- 3
- Relative number (R)
- 33
- Observer
- FA
- Reading
- all checks consistent
- File
- 19740429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 7 | 74E | 231 | |||
| 2 | ? – 1 | -4 | 80E | 225 | |||
| 3 | A – 1 | 19 | 27W | 332 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.