Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 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)
- 4
- Number of spots (f)
- 37
- Relative number (R)
- 77
- Observer
- ED
- Reading
- all checks consistent
- File
- 19741001.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 12 | 9 | 33E | 24 | 30E | ||
| 2 | D – 14 | -6 | 39E | 18 | 36E | ||
| 3 | A – 1 | -15 | 26E | 31 | 23E | ||
| 4 | B – 10 | -41 | 04E | 53 | 01E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.