Daily Sunspot Evaluation
Observation Sheet Sunday, 28 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)
- 11
- Number of spots (f)
- 86
- Relative number (R)
- 196
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 21 | 12E | 63 | |||
| 2 | E – 40 | 22 | 35E | 40 | |||
| 3 | B – 6 | -9 | 63E | 12 | |||
| 4 | H – 3 | -8 | 77E | 358 | |||
| 5 | D – 17 | -7 | 28E | 47 | |||
| 6 | A – 1 | -12 | 43W | 118 | |||
| 7 | B – 5 | 10 | 27W | 102 | |||
| 8 | C – 9 | 4 | 01W | 76 | |||
| 9 | A – 1 | 9 | 12W | 87 | |||
| 10 | A – 2 | 23 | 24W | 99 | |||
| 11 | A – 1 | 18 | 12W | 87 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.