Daily Sunspot Evaluation
Observation Sheet Thursday, 25 February 1999
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)
- 4
- Number of spots (f)
- 19
- Relative number (R)
- 59
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19990225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 17 | 38W | 175 | 40W | 1.5 | |
| 2 | BXI – 8 | 26 | 36E | 101 | 34E | 8 | |
| 3 | AX – 5 | 25 | 62E | 75 | 60E | 5 | |
| 4 | CAO – 5 | -27 | 40E | 97 | 38E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.