Daily Sunspot Evaluation
Observation Sheet Monday, 30 September 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)
- 30
- Relative number (R)
- 80
- Observer
- FA
- Reading
- all checks consistent
- File
- 19740930.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 8 | 47E | 22 | |||
| 2 | D – 13 | -6 | 53E | 16 | |||
| 3 | A – 3 | -15 | 40E | 29 | |||
| 4 | C – 8 | -11 | 17E | 52 | |||
| 5 | A – 3 | 14 | 27W | 96 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.