Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 July 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)
- 13
- Number of spots (f)
- 76
- Relative number (R)
- 206
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 24 | 46E | ||||
| 2 | C – 5 | 15 | 34E | ||||
| 3 | A – 1 | 3 | 44E | ||||
| 4 | J – 1 | -4 | 34E | ||||
| 5 | E – 23 | -18 | 55E | ||||
| 6 | C – 16 | -15 | 40E | ||||
| 7 | J – 2 | -18 | 30E | ||||
| 8 | C – 5 | -14 | 2W | ||||
| 9 | C – 11 | -12 | 13W | ||||
| 10 | ? – 1 | -18 | 80W | ||||
| 11 | J – 1 | -3 | 60W | ||||
| 12 | E – 6 | 9 | 66W | ||||
| 13 | B – 2 | 21 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.