Daily Sunspot Evaluation
Observation Sheet Thursday, 29 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)
- 28
- Relative number (R)
- 78
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19990429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 21 | 11W | 38 | 14W | 4.5 | |
| 2 | EKC – 18 | 21 | 05W | 32 | 08W | 13.5 | |
| 3 | CAO – 3 | 16 | 03W | 30 | 06W | 5.5 | |
| 4 | ? – 1 | -13 | 79W | 106 | 82W | ||
| 5 | ? – 1 | 15 | 79E | 308 | 76E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.