Daily Sunspot Evaluation
Observation Sheet Friday, 9 September 1960
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)
- 40
- Relative number (R)
- 130
- Observer
- BG
- Reading
- all checks consistent
- File
- 19600909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 7 | 18 | 1E | ||||
| 2 | ? – 1 | 14 | 79E | ||||
| 3 | J – 1 | 15 | 49E | ||||
| 4 | ? – 1 | 10 | 83E | ||||
| 5 | B – 5 | 5 | 20E | ||||
| 6 | H – 1 | -15 | 20E | ||||
| 7 | C – 7 | -8 | 11E | ||||
| 8 | D – 12 | -5 | 18W | ||||
| 9 | A – 5 | 16 | 25W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.