Daily Sunspot Evaluation
Observation Sheet Saturday, 28 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)
- 4
- Number of spots (f)
- 19
- Relative number (R)
- 59
- Observer
- MS
- Reading
- all checks consistent
- File
- 20040228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 8 | 13 | 45W | 162 | 48W | 11 | 28 |
| 2 | DAO – 3 | -5 | 26W | 143 | 29W | ~9 | 31 |
| 3 | HS – 2 | -17 | 10W | 127 | 13W | ~3 | 33 |
| 4 | DAO – 6 | -13 | 47E | 70 | 44E | ~7 | 32 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.