Daily Sunspot Evaluation
Observation Sheet Thursday, 19 February 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)
- 2
- Number of spots (f)
- 2
- Relative number (R)
- 22
- Observer
- TG
- Reading
- counts consistent, some coordinates doubtful
- File
- 20040219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 1 | 21E | 21 ⚠ | 18E | 1 | 26 |
| 2 | HS – 1 | -8 | 74W | 340 ⚠ | 77W | 4.5 | 20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.