Daily Sunspot Evaluation
Observation Sheet Sunday, 27 October 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)
- 5
- Number of spots (f)
- 17
- Relative number (R)
- 67
- Observer
- SK
- Reading
- all checks consistent
- File
- 19741027.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 7 | 20E | 52 | 17E | ||
| 2 | ? – 1 | 4 | 72E | 0 | 69E | ||
| 3 | J – 3 | -6 | 46E | 26 | 43E | ||
| 4 | B – 4 | -14 | 37E | 35 | 34E | ||
| 5 | A – 3 | -18 | 15W | 87 | 18W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.