Daily Sunspot Evaluation
Observation Sheet Monday, 22 December 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)
- 2
- Number of spots (f)
- 18
- Relative number (R)
- 38
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19971222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 17 | 43W | 92 | 44W | 1.5 | 117 |
| 2 | EAC – 17 | -22 | 61E | 348 | 60E | 13.5 | 118 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.