Daily Sunspot Evaluation
Observation Sheet Monday, 11 August 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)
- 6
- Number of spots (f)
- 29
- Relative number (R)
- 89
- Observer
- SM
- Reading
- all checks consistent
- File
- 19690811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 8 | 63E | 287 | |||
| 2 | B – 3 | -16 | 48E | 302 | |||
| 3 | D – 11 | -32 | 14W | 4 | |||
| 4 | C – 8 | -21 | 60W | 50 | |||
| 5 | J – 1 | -12 | 83W | 73 | |||
| 6 | ? – 3 | 8 | 76W | 66 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.