Daily Sunspot Evaluation
Observation Sheet Thursday, 19 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)
- 4
- Number of spots (f)
- 50
- Relative number (R)
- 90
- Observer
- AK
- Reading
- all checks consistent
- File
- 19560719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -22 | 36E | ||||
| 2 | H – 2 | -15 | 17E | ||||
| 3 | A – 1 | 17 | 74W | ||||
| 4 | D – 46 | 26 | 9W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.