Daily Sunspot Evaluation
Observation Sheet Friday, 12 June 1970
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)
- 8
- Number of spots (f)
- 64
- Relative number (R)
- 144
- Observer
- SM
- Reading
- all checks consistent
- File
- 19700612.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 13 | 16 | 23°E | 264 | |||
| 2 | A – 2 | 16 | 35°E | 252 | |||
| 3 | C – 9 | 16 | 46°E | 241 | |||
| 4 | E – 10 | 19 | 64°E | 223 | |||
| 5 | J – 6 | -16 | 18°W | 305 | |||
| 6 | ? – 6 | -14 | 68°W | 355 | |||
| 7 | B – 8 | 14 | 27°W | 314 | |||
| 8 | C – 10 | 16 | 03°W | 290 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.