Daily Sunspot Evaluation
Observation Sheet Tuesday, 10 August 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)
- 38
- Relative number (R)
- 88
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19990810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 15 | 76W | 180 | 79W | - | |
| 2 | AX – 1 | -14 | 61W | 165 | 64W | - | |
| 3 | DSO – 2 | -31 | 24W | 128 | 27W | 9.5 | |
| 4 | HA – 3 | -14 | 11E | 93 | 08E | 0.2 | |
| 5 | DAC – 30 | -17 | 18E | 86 | 15E | 9 | Dai-20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.