Daily Sunspot Evaluation
Observation Sheet Saturday, 28 June 1958
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)
- 121
- Relative number (R)
- 231
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 10 | 16 | 19E | ||||
| 2 | B – 4 | 27 | 50E | ||||
| 3 | ? – 1 | 21 | 80E | ||||
| 4 | E – 29 | 10 | 23E | ||||
| 5 | B – 3 | 12 | 53E | ||||
| 6 | T – 1 | -10 | 30E | ||||
| 7 | C – 3 | -6 | 14E | ||||
| 8 | F – 50 | -19 | 9E | ||||
| 9 | B – 3 | -23 | 18W | ||||
| 10 | A – 1 | -11 | 33W | ||||
| 11 | E – 16 | 13 | 47W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.