Daily Sunspot Evaluation
Observation Sheet Saturday, 24 April 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)
- 5
- Number of spots (f)
- 22
- Relative number (R)
- 72
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19990424.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 32 | 68W | 160 | 71W | 1 | Hr-1 |
| 2 | BXO – 2 | 24 | 52E | 40 | 49E | ~5 | |
| 3 | BXO – 3 | 16 | 61E | 31 | 58E | ~5 | |
| 4 | BXI – 7 | -20 | 51W | 143 | 54W | 7 | |
| 5 | CAI – 9 | -15 | 12W | 104 | 15W | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.