Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 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)
- 13
- Number of spots (f)
- 80
- Relative number (R)
- 210
- Observer
- MH
- Reading
- all checks consistent
- File
- 19560919.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | 31 | 19E | ||||
| 2 | E – 8 | 24 | 29E | ||||
| 3 | E – 6 | 28 | 46E | ||||
| 4 | B – 3 | -11 | 53E | ||||
| 5 | H – 3 | -22 | 22E | ||||
| 6 | B – 8 | -15 | 2E | ||||
| 7 | J – 2 | -30 | 9W | ||||
| 8 | B – 3 | -13 | 21W | ||||
| 9 | F – 17 | -18 | 34W | ||||
| 10 | C – 6 | -23 | 46W | ||||
| 11 | B – 9 | 12 | 26W | ||||
| 12 | A – 2 | 24 | 30W | ||||
| 13 | C – 8 | 25 | 4W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.