Daily Sunspot Evaluation
Observation Sheet Saturday, 28 June 1969
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)
- 3
- Number of spots (f)
- 26
- Relative number (R)
- 56
- Observer
- MÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 9 | 16 | 02E | 240 ⚠ | |||
| 2 | C – 14 | -10 | 35E | 177 | |||
| 3 | B – 3 | 7 | 29W | 241 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.