Daily Sunspot Evaluation
Observation Sheet Saturday, 6 September 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)
- 4
- Number of spots (f)
- 29
- Relative number (R)
- 69
- Observer
- HE
- Reading
- all checks consistent
- File
- 19970906.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 32 | 83W | 104 | 85W | - | 68 |
| 2 | DRI – 12 | 20 | 17E | 4 | 15E | 6 | 71 |
| 3 | CRO – 3 | 20 | 62E | 319 | 60E | 4 | 73 |
| 4 | OSO – 13 | -27 | 24E | 357 | 22E | 10 | 72 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.