Daily Sunspot Evaluation
Observation Sheet Monday, 22 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)
- 20
- Relative number (R)
- 50
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19970922.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 4 | 27 | 59W | 230 | 62W | 3 | 25 |
| 2 | CAI – 13 | -29 | 49E | 122 | 46E | 7.5 | 26 |
| 3 | HA – 3 | -22 | 69E | 102 | 66E | 3 | 27 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.