Daily Sunspot Evaluation
Observation Sheet Monday, 30 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)
- 12
- Relative number (R)
- 42
- Observer
- FA
- Reading
- all checks consistent
- File
- 19741230.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | -9 | 67E | 242 | 64E | ||
| 2 | B – 2 | -2 | 03W | 312 | 06W | ||
| 3 | B – 5 | 15 | 57W | 6 | 60W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.