Daily Sunspot Evaluation
Observation Sheet Friday, 24 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)
- 4
- Number of spots (f)
- 18
- Relative number (R)
- 58
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19990924.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 12 | 65W | 294 | 68W | ||
| 2 | HS – 1 | 19 | 21E | 208 | 28E | -2 | |
| 3 | CSO – 4 | -20 | 16W | 245 | 19W | 7 | |
| 4 | CRI – 11 | -10 | 40E | 189 | 39E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.