Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 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)
- 6
- Number of spots (f)
- 54
- Relative number (R)
- 114
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19990407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 12 | 11 | 14E | 303 | 12E | 5 | |
| 2 | DAC – 24 | 21 | 35E | 282 | 33E | 9 | |
| 3 | EHI – 9 | -27 | 46W | 3 | 48W | -12.5 | |
| 4 | BXI – 5 | -30 | 30W | 347 | 32W | 3.5 | |
| 5 | HS – 1 | -34 | 49E | 268 | 49E | 1 | |
| 6 | DAO – 3 | -17 | 58E | 259 | 56E | 8.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.