Daily Sunspot Evaluation
Observation Sheet Wednesday, 24 September 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)
- 38
- Relative number (R)
- 108
- Observer
- TY
- Reading
- all checks consistent
- File
- 19690924.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 11 | 42E | 85 | |||
| 2 | G – 3 | 11 | 65E | 62 | |||
| 3 | D – 8 | 7 | 38E | 89 | |||
| 4 | B – 3 | 6 | 19E | 108 | |||
| 5 | H – 4 | -14 | 47E | 80 | |||
| 6 | C – 5 | -10 | 28E | 99 | |||
| 7 | E – 12 | 5 | 23W | 150 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.