Daily Sunspot Evaluation
Observation Sheet Sunday, 16 September 1956
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)
- 18
- Number of spots (f)
- 112
- Relative number (R)
- 292
- Observer
- AG
- Reading
- all checks consistent
- File
- 19560916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 22 | 4W | ||||
| 2 | J – 1 | 23 | 8E | ||||
| 3 | B – 3 | 27 | 19E | ||||
| 4 | C – 7 | 26 | 34E | ||||
| 5 | J – 2 | 31 | 59E | ||||
| 6 | ? – 1 | 33 | 73E | ||||
| 7 | A – 1 | 21 | 63E | ||||
| 8 | ? – 1 | 26 | 79E | ||||
| 9 | D – 19 | -15 | 43E | ||||
| 10 | J – 1 | -23 | 60E | ||||
| 11 | J – 3 | -29 | 30E | ||||
| 12 | A – 1 | -25 | 18E | ||||
| 13 | E – 47 | -18 | 4E | ||||
| 14 | J – 3 | -24 | 10W | ||||
| 15 | B – 3 | -30 | 49W | ||||
| 16 | E – 12 | -24 | 64W | ||||
| 17 | A – 3 | 15 | 69W | ||||
| 18 | B – 2 | 44 | 48W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.