Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 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)
- 3
- Number of spots (f)
- 5
- Relative number (R)
- 35
- Observer
- NA
- Reading
- all checks consistent
- File
- 19990223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 15 | 14W | 177 | 16W | ~15 | |
| 2 | HS – 1 | 27 | 64E | 99 | 62E | ~2 | |
| 3 | DSO – 3 | -24 | 70E | 93 | 68E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.