Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 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)
- 4
- Number of spots (f)
- 30
- Relative number (R)
- 70
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19971223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 18 | 59W | 94 | 59W | - | 115 41 |
| 2 | AX – 1 | 19 | 49E | 346 | 49E | - | 115 45 |
| 3 | ? – 1 | 21 | 90E | 305 | 90E | - | 116 45 |
| 4 | EAC – 27 | -22 | 47E | 348 | 47E | 14 | 114 45 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.