Daily Sunspot Evaluation
Observation Sheet Sunday, 29 April 1973
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)
- 22
- Relative number (R)
- 52
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 13 | -3 | 09W | 91 | 70 | ||
| 2 | H – 5 | 11 | 64W | 146 | 68 | ||
| 3 | B – 4 | -1 | 05W | 87 | 73 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.