Daily Sunspot Evaluation
Observation Sheet Monday, 18 February 2002
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)
- 58
- Relative number (R)
- 88
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20020218.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ERC – 14 | 15 | 46W | 210 | 49W | 14.5 | |
| 2 | HS – 1 | 23 | 39W | 203 | 42W | 2 | |
| 3 | FKC – 43 | -18 | 29E | 135 | 26E | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.