Daily Sunspot Evaluation
Observation Sheet Sunday, 21 September 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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20030921.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 5 | 17 | 04E | 61 | 02E | ~2 | 257 |
| 2 | HS – 1 | 9 | 28E | 37 | 26E | 2 | 260 |
| 3 | ? – 12 | 2 | 73E | 352 | 71E | ~14 | 261 |
| 4 | CAI – 13 | -11 | 47W | 112 | 49W | ~8 | 256 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.