Daily Sunspot Evaluation
Observation Sheet Thursday, 12 July 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)
- 12
- Number of spots (f)
- 165
- Relative number (R)
- 285
- Observer
- AK
- Reading
- all checks consistent
- File
- 19560712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 50 | 14 | 1E | ||||
| 2 | C – 18 | 33 | 36E | ||||
| 3 | E – 45 | 19 | 24E | ||||
| 4 | C – 17 | 14 | 62E | ||||
| 5 | A – 1 | -13 | 58E | ||||
| 6 | A – 2 | -30 | 13W | ||||
| 7 | B – 3 | -27 | 23W | ||||
| 8 | H – 4 | -21 | 24W | ||||
| 9 | A – 1 | 22 | 61W | ||||
| 10 | E – 16 | 19 | 34W | ||||
| 11 | B – 5 | 26 | 21W | ||||
| 12 | A – 3 | 30 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.