Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 September 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)
- 87
- Relative number (R)
- 197
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 29 | 9E | ||||
| 2 | A – 1 | 36 | 60E | ||||
| 3 | E – 15 | -5 | 48E | ||||
| 4 | G – 2 | -19 | 65E | ||||
| 5 | A – 2 | -11 | 23E | ||||
| 6 | E – 14 | -18 | 54W | ||||
| 7 | J – 1 | -14 | 74W | ||||
| 8 | ? – 1 | 16 | 83W | ||||
| 9 | C – 10 | 10 | 10W | ||||
| 10 | D – 38 | 22 | 42W | ||||
| 11 | A – 1 | 29 | 15W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.