Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 9
- Number of spots (f)
- 132
- Relative number (R)
- 222
- Observer
- MH
- Reading
- all checks consistent
- File
- 19560912.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 21 | 22E | ||||
| 2 | A – 1 | 22 | 48E | ||||
| 3 | D – 5 | 22 | 62E | ||||
| 4 | E – 29 | -19 | 58E | ||||
| 5 | H – 3 | -24 | 42E | ||||
| 6 | F – 67 | -24 | 10W | ||||
| 7 | A – 7 | -16 | 21W | ||||
| 8 | C – 7 | -15 | 32W | ||||
| 9 | A – 6 | 21 | 37W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.