Daily Sunspot Evaluation
Observation Sheet Monday, 28 June 1965
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)
- 4
- Number of spots (f)
- 7
- Relative number (R)
- 47
- Observer
- SK
- Reading
- all checks consistent
- File
- 19650628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 28 | 16F | 39 | |||
| 2 | A – 2 | 25 | 32E | 23 | |||
| 3 | C – 3 | 30 | 45E | 10 | |||
| 4 | A – 1 | 19 | 30W | 85 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.