Daily Sunspot Evaluation
Observation Sheet Friday, 9 August 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)
- 7
- Number of spots (f)
- 65
- Relative number (R)
- 135
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 6 | 21E | 133 | |||
| 2 | J – 1 | -15 | 45E | 109 | |||
| 3 | B – 15 | 3 | 40W | 194 | |||
| 4 | A – 1 | 7 | 20W | 174 | |||
| 5 | B – 5 | 13 | 47W | 201 | |||
| 6 | C – 7 | 14 | 18W | 172 | |||
| 7 | H – 30 | 12 | 04W | 158 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.