Daily Sunspot Evaluation
Observation Sheet Friday, 16 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)
- 10
- Number of spots (f)
- 54
- Relative number (R)
- 154
- Observer
- BG
- Reading
- all checks consistent
- File
- 19600916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 6 | 22 | 1E | ||||
| 2 | B – 4 | 26 | 22E | ||||
| 3 | J – 1 | -5 | 38E | ||||
| 4 | ? – 6 | -18 | 68E | ||||
| 5 | A – 1 | -17 | 42W | ||||
| 6 | C – 22 | -4 | 15W | ||||
| 7 | ? – 1 | -16 | 73W | ||||
| 8 | B – 4 | 16 | 33W | ||||
| 9 | C – 5 | 12 | 12W | ||||
| 10 | A – 4 | 13 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.