Daily Sunspot Evaluation
Observation Sheet Saturday, 26 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)
- 9
- Number of spots (f)
- 130
- Relative number (R)
- 220
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580726.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 4 | 6E | ||||
| 2 | H – 3 | 16 | 49E | ||||
| 3 | D – 12 | 5 | 64E | ||||
| 4 | E – 30 | -18 | 17E | ||||
| 5 | F – 68 | -16 | 1W | ||||
| 6 | J – 1 | -4 | 6W | ||||
| 7 | J – 1 | -14 | 54W | ||||
| 8 | C – 7 | 26 | 66W | ||||
| 9 | C – 5 | 14 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.