Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 9
- Number of spots (f)
- 57
- Relative number (R)
- 147
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 7 | 15E | 99 | |||
| 2 | ? – 4 | -15 | 82E | 32 | |||
| 3 | J – 5 | -17 | 56E | 58 | |||
| 4 | A – 1 | -14 | 07E | 107 | |||
| 5 | A – 1 | -25 | 33W | 147 | |||
| 6 | B – 8 | -2 | 23W | 137 | |||
| 7 | A – 1 | 8 | 60W | 174 | |||
| 8 | H – 26 | 13 | 44W | 158 | |||
| 9 | B – 5 | 10 | 20W | 134 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.