Daily Sunspot Evaluation
Observation Sheet Thursday, 10 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)
- 80
- Relative number (R)
- 180
- Observer
- MÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 13 | 46E | 38 ⚠ | |||
| 2 | J – 1 | 9 | 84E | 330 | |||
| 3 | J – 1 | 5 | 81E | 333 | |||
| 4 | D – 24 | -17 | 38E | 16 | |||
| 5 | A – 2 | -9 | 17E | 37 | |||
| 6 | C – 33 | -15 | 38W | 92 | |||
| 7 | A – 1 | 8 | 52W | 106 | |||
| 8 | H – 5 | 12 | 41W | 95 | |||
| 9 | J – 1 | 17 | 78W | 127 ⚠ | |||
| 10 | J – 2 | 9 | 41W | 65 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.