Daily Sunspot Evaluation
Observation Sheet Friday, 20 February 1998
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)
- 13
- Relative number (R)
- 33
- Observer
- NA
- Reading
- all checks consistent
- File
- 19980220.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EHO – 12 | -26 | 56W | 31 | 53W | 13 | 26 23 |
| 2 | AX – 1 | -22 | 07E | 334 | 04E | 33 24 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.