Daily Sunspot Evaluation
Observation Sheet Thursday, 25 March 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)
- 10
- Relative number (R)
- 50
- Observer
- NA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990325.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 3 | -12 | 42W | 19 ⚠ | 45W | ~5.5 | |
| 2 | HS – 2 | 29 | 34E | 94 | 32E | ~2 | |
| 3 | HS – 3 | 19 | 52E | 76 | 50E | ~4 | |
| 4 | ? – 2 | -11 | 79W | 205 | 79W | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.