Daily Sunspot Evaluation
Observation Sheet Thursday, 31 July 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)
- 5
- Number of spots (f)
- 18
- Relative number (R)
- 68
- Observer
- TG
- Reading
- all checks consistent
- File
- 20030731.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 2 | 14 | 67W | 100 | 70W | 7 | 212 |
| 2 | HS – 1 | 11 | 06W | 39 | 09W | ~2 | 210 |
| 3 | AX – 1 | 9 | 04E | 29 | 01E | - | 216 |
| 4 | HR – 2 | -20 | 07E | 26 | 04E | 1 | 217 |
| 5 | EAO – 12 | -8 | 38E | 355 | 35E | 11 | 214 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.