Daily Sunspot Evaluation
Observation Sheet Monday, 22 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)
- 2
- Number of spots (f)
- 6
- Relative number (R)
- 26
- Observer
- HM
- Reading
- all checks consistent
- File
- 19740422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -8 | 48E | 350 | |||
| 2 | B – 3 | 2 | 66W | 104 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.