Daily Sunspot Evaluation
Observation Sheet Friday, 27 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)
- 5
- Number of spots (f)
- 20
- Relative number (R)
- 70
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19980227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 11 | 15 | 29W | 277 | 31W | 7.5 | 36 35 |
| 2 | AX – 1 | -29 | 60W | 308 | 62W | 39 41 | |
| 3 | BXO – 2 | -21 | 34W | 282 | 36W | 3 | 40 40 |
| 4 | DAO – 5 | -26 | 13W | 261 | 15W | 8 | 38 41 |
| 5 | AX – 1 | -25 | 14E | 234 | 12E | 0.5 | 41 41 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.