Daily Sunspot Evaluation
Observation Sheet Thursday, 21 November 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)
- 20
- Relative number (R)
- 50
- Observer
- ED
- Reading
- all checks consistent
- File
- 19741121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 8 | 13 | 04E | 98 | 01E | ||
| 2 | A – 2 | 6 | 55E | 47 | 52E | ||
| 3 | B – 10 | 1 | 28E | 74 | 25E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.