Daily Sunspot Evaluation
Observation Sheet Saturday, 25 September 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)
- 3
- Number of spots (f)
- 10
- Relative number (R)
- 40
- Observer
- HE
- Reading
- all checks consistent
- File
- 19990925.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 19 | 07E | 206 | 07E | 1.5 | |
| 2 | CAO – 2 | -21 | 30W | 243 | 30W | 5.5 | |
| 3 | CAO – 7 | -10 | 24E | 189 | 24E | 4.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.