Daily Sunspot Evaluation
Observation Sheet Thursday, 13 May 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)
- 31
- Relative number (R)
- 71
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20040513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 2 | -9 | 09E | 198 | 06E | ~3 | 80 |
| 2 | AX – 4 | -8 | 15E | 192 | 12E | 1 | 85 |
| 3 | AX – 5 | -5 | 25E | 182 | 22E | ~2 | 82 |
| 4 | DAI – 20 | -3 | 32E | 175 | 29E | 7 | 83 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.