Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 September 1959
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)
- 63
- Relative number (R)
- 153
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 4 | 14 | 11E | ||||
| 2 | ? – 1 | 20 | 71E | ||||
| 3 | J – 2 | 13 | 30E | ||||
| 4 | F – 32 | 6 | 25E | ||||
| 5 | ? – 6 | -18 | 71E | ||||
| 6 | C – 9 | -18 | 23E | ||||
| 7 | ? – 2 | 18 | 85W | ||||
| 8 | A – 2 | 21 | 36W | ||||
| 9 | B – 5 | 15 | 18W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.