Daily Sunspot Evaluation
Observation Sheet Tuesday, 21 October 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)
- 30
- Relative number (R)
- 70
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20031021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 15 | 14E | 14 | 13E | ~1 | 284 |
| 2 | EKC – 20 | 5 | 33E | 355 | 32E | 10.5 | 285 |
| 3 | HA – 6 | -10 | 22E | 6 | 21E | 2 | 286 |
| 4 | ORO – 3 | 54E | 334 | 53E | 5 | 287 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.