Daily Sunspot Evaluation
Observation Sheet Saturday, 9 August 1997
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)
- 26
- Relative number (R)
- 56
- Observer
- MB
- Reading
- all checks consistent
- File
- 19970809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 6 | 21 | 81W | 112 | 82W | - | 56 |
| 2 | DRO – 3 | 26 | 58E | 333 | 57E | 6 | 58 |
| 3 | DAI – 17 | -20 | 07E | 24 | 06E | 9 | 57 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.