Daily Sunspot Evaluation
Observation Sheet Friday, 11 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)
- 10
- Number of spots (f)
- 73
- Relative number (R)
- 173
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 8 | 13 | 03E | 38 | |||
| 2 | J – 1 | 10 | 69E | 332 | |||
| 3 | J – 1 | 6 | 67E | 334 | |||
| 4 | B – 7 | -16 | 47E | 354 | |||
| 5 | D – 21 | -16 | 25E | 16 | |||
| 6 | A – 2 | -9 | 04E | 37 | |||
| 7 | C – 24 | -16 | 50W | 91 | |||
| 8 | A – 1 | -10 | 51W | 92 | |||
| 9 | H – 5 | 12 | 55W | 96 | 1 | ||
| 10 | J – 3 | 9 | 24W | 65 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.