Daily Sunspot Evaluation
Observation Sheet Sunday, 27 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)
- 12
- Number of spots (f)
- 182
- Relative number (R)
- 302
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 27 | 77E | ||||
| 2 | H – 9 | 15 | 36E | ||||
| 3 | D – 15 | 6 | 51E | ||||
| 4 | E – 40 | -18 | 5E | ||||
| 5 | F – 100 | -16 | 15W | ||||
| 6 | J – 1 | -4 | 20W | ||||
| 7 | C – 2 | -17 | 52W | ||||
| 8 | J – 2 | -14 | 69W | ||||
| 9 | A – 2 | 4 | 9W | ||||
| 10 | A – 1 | 27 | 77W | ||||
| 11 | A – 4 | 15 | 19W | ||||
| 12 | A – 1 | 16 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.