Daily Sunspot Evaluation
Observation Sheet Monday, 1 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)
- 3
- Number of spots (f)
- 25
- Relative number (R)
- 55
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19970901.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 5 | 21 | 22W | 110 | 25W | 1.5 | 67 |
| 2 | FAO – 19 | 30 | 18W | 106 | 21W | 17 | 63 |
| 3 | ? – 1 | 33 | 74E | 14 | 71E | - | 70 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.