Daily Sunspot Evaluation
Observation Sheet Thursday, 20 January 2005
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)
- 3
- Number of spots (f)
- 13
- Relative number (R)
- 43
- Observer
- TG
- Reading
- all checks consistent
- File
- 20050120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 11 | 14 | 64W | 183 | 66W | 2.15 | |
| 2 | HS – 1 | 6 | 43E | 76 | 41E | 2 | |
| 3 | ? – 1 | -7 | 83W | 202 | 85W | ~2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.