Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 10
- Number of spots (f)
- 36
- Relative number (R)
- 136
- Observer
- MH
- Reading
- all checks consistent
- File
- 19560715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 8 | 15 | 25E | ||||
| 2 | ? – 1 | -16 | 70E | ||||
| 3 | A – 1 | -25 | 36E | ||||
| 4 | A – 1 | -27 | 70W | ||||
| 5 | C – 2 | -21 | 64W | ||||
| 6 | D – 5 | 14 | 40W | ||||
| 7 | ? – 4 | 20 | 75W | ||||
| 8 | A – 2 | 25 | 65W | ||||
| 9 | C – 10 | 18 | 15W | ||||
| 10 | C – 2 | 32 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.