Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 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)
- 189
- Relative number (R)
- 319
- Observer
- SG
- Reading
- all checks consistent
- File
- 19580729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 13 | 16 | 7E | ||||
| 2 | C – 12 | 27 | 54EE | ||||
| 3 | B – 6 | 15 | 52E | ||||
| 4 | D – 18 | 8 | 24EE | ||||
| 5 | ? – 8 | -19 | 78EE | ||||
| 6 | ? – 1 | -24 | 74E | ||||
| 7 | A – 2 | -10 | 5E | ||||
| 8 | C – 21 | -17 | 18W | ||||
| 9 | F – 79 | -15 | 39WEE | ||||
| 10 | A – 3 | -3 | 46W | ||||
| 11 | A – 2 | -6 | 65W | ||||
| 12 | B – 6 | 19 | 45WE | ||||
| 13 | B – 18 | 20 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.