Daily Sunspot Evaluation
Observation Sheet Saturday, 12 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)
- 11
- Number of spots (f)
- 97
- Relative number (R)
- 207
- Observer
- SG
- Reading
- all checks consistent
- File
- 19580712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 40 | 58E | ||||
| 2 | H – 2 | 16 | 39E | ||||
| 3 | ? – 3 | 8 | 81E | ||||
| 4 | G – 20 | -23 | 12E | ||||
| 5 | B – 5 | -9 | 19W | ||||
| 6 | E – 33 | -23 | 61WEE | ||||
| 7 | ? – 3 | 24 | 83W | ||||
| 8 | A – 2 | 25 | 65W | ||||
| 9 | C – 10 | 28 | 58W | ||||
| 10 | B – 14 | 30 | 20W | ||||
| 11 | A – 4 | 36 | 11W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.