Daily Sunspot Evaluation
Observation Sheet Thursday, 8 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)
- 8
- Number of spots (f)
- 58
- Relative number (R)
- 138
- Observer
- SG0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 12 | 10 | 00 | 304 | 03W | 6.5 | |
| 2 | DKI – 24 | 21 | 20E | 284 | 17E | 5.5 | |
| 3 | AX – 2 | 25 | 30E | 274 | 24E | 0.5 | |
| 4 | EHO – 5 | -28 | 60W | 4 | 63W | 12 | |
| 5 | HR – 2 | -35 | 35E | 264 ⚠ | 32E | 1.5 | |
| 6 | DAO – 8 | -12 | 44E | 260 | 41E | 8 | |
| 7 | AX – 3 | -28 | 62E | 240 | 59E | 3 | |
| 8 | ? – 2 | -18 | 83E | 221 | 80E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.