Daily Sunspot Evaluation
Observation Sheet Monday, 23 December 1974
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)
- 8
- Relative number (R)
- 38
- Observer
- FA
- Reading
- all checks consistent
- File
- 19741223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 4 | 5 | 04°E | 35 | 03°E | ||
| 2 | B – 3 | 6 | 34°W | 73 | 35W | ||
| 3 | H – 1 | 13 | 68W | 10 | 69W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.