Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 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)
- 11
- Number of spots (f)
- 48
- Relative number (R)
- 158
- Observer
- SG
- Reading
- all checks consistent
- File
- 19590916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 15 | 45E | ||||
| 2 | A – 1 | 14 | 61E | ||||
| 3 | C – 8 | 5 | 5E | ||||
| 4 | C – 6 | -15 | 32E | ||||
| 5 | A – 2 | -16 | 15W | ||||
| 6 | B – 2 | -16 | 22W | ||||
| 7 | G – 2 | -17 | 64W | ||||
| 8 | ? – 2 | -16 | 85W | ||||
| 9 | E – 10 | 6 | 66W | ||||
| 10 | B – 3 | 9 | 16W | ||||
| 11 | A – 2 | 20 | 16W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.