Daily Sunspot Evaluation
Observation Sheet Thursday, 22 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)
- 3
- Number of spots (f)
- 25
- Relative number (R)
- 55
- Observer
- NA
- Reading
- all checks consistent
- File
- 19990422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | 34 | 37W | 156 | 40W | 6.5 | |
| 2 | HS – 2 | -21 | 29W | 148 | 32W | ~1 | |
| 3 | DAO – 15 | -15 | 12E | 107 | 09E | 7.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.