Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 July 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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 18 | 12 | 02E | 240 | |||
| 2 | A – 7 | 10 | 36E | 206 | |||
| 3 | A – 1 | -17 | 57E | 185 | |||
| 4 | B – 5 | -16 | 60W | 302 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.