Daily Sunspot Evaluation
Observation Sheet Thursday, 21 August 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)
- 26
- Relative number (R)
- 66
- Observer
- TG
- Reading
- all checks consistent
- File
- 20030821.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 6 | 7 | 14W | 129 | 17W | ~3.5 | 237 |
| 2 | EAI – 11 | 7 | 27E | 88 | 24E | ~13 | 234 |
| 3 | BXO – 3 | 11 | 57E | 58 | 54E | 4 | 238 |
| 4 | BXO – 6 | -8 | 18E | 97 | 15E | 5 | 236 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.