Daily Sunspot Evaluation
Observation Sheet Thursday, 11 July 1968
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)
- 65
- Relative number (R)
- 125
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 45 | 10 | 22°E | 156 | |||
| 2 | J – 1 | 13 | 8°E | 90 | |||
| 3 | J – 1 | -15 | 66°E | 112 | |||
| 4 | B – 5 | -31 | 58°E | 120 | |||
| 5 | J – 1 | -16 | 5°W | 183 | |||
| 6 | H – 12 | 11 | 4°W | 182 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.