Daily Sunspot Evaluation
Observation Sheet Saturday, 12 April 2003
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)
- 24
- Relative number (R)
- 54
- Observer
- MB
- Reading
- all checks consistent
- File
- 20030412.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HH – 16 | 6 | 33W | 80 | 36W | 6 | 83 |
| 2 | HA – 6 | -9 | 52E | 355 | 49E | ~25 | 89 |
| 3 | ? – 2 | -22 | 80E | 327 | 77E | ~1 | 90 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.