Daily Sunspot Evaluation
Observation Sheet Wednesday, 1 October 1969
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)
- 7
- Number of spots (f)
- 39
- Relative number (R)
- 109
- Observer
- SK
- Reading
- all checks consistent
- File
- 19691001.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 18 | -13 | 27E | 9 | |||
| 2 | D – 4 | -14 | 15E | 21 | |||
| 3 | D – 6 | -12 | 21W | 57 | |||
| 4 | J – 1 | -13 | 46W | 82 | |||
| 5 | G – 2 | -9 | 65W | 101 | |||
| 6 | H – 5 | 8 | 54W | 90 | |||
| 7 | C – 3 | 12 | 28W | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.