Daily Sunspot Evaluation
Observation Sheet Friday, 11 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)
- 10
- Number of spots (f)
- 94
- Relative number (R)
- 194
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 35 | 4E | ||||
| 2 | J – 1 | 40 | 71E | ||||
| 3 | J – 1 | 17 | 51E | ||||
| 4 | H – 9 | -21 | 23E | ||||
| 5 | E – 41 | -23 | 47W | ||||
| 6 | J – 1 | -16 | 70W | ||||
| 7 | C – 4 | 25 | 68W | ||||
| 8 | C – 19 | 28 | 47W | ||||
| 9 | A – 1 | 31 | 32W | ||||
| 10 | E – 14 | 29 | 9W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.