Daily Sunspot Evaluation
Observation Sheet Sunday, 22 February 2004
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)
- 10
- Relative number (R)
- 40
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 8 | 14 | 34E | 160 | 33E | 8 | 28 |
| 2 | HS – 1 | -12 | 34E | 160 | 33E | ≥0.5 | 29 |
| 3 | HS – 1 | -24 | 42E | 152 | 41E | 1 | 30 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.