Daily Sunspot Evaluation
Observation Sheet Saturday, 28 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)
- 6
- Number of spots (f)
- 47
- Relative number (R)
- 107
- Observer
- FY
- Reading
- all checks consistent
- File
- 19560728.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 11 | 27 | 41E | ||||
| 2 | J – 1 | -23 | 51E | ||||
| 3 | G – 4 | -26 | 64E | ||||
| 4 | B – 4 | -31 | 64E | ||||
| 5 | E – 19 | -22 | 11W | ||||
| 6 | D – 8 | 27 | 35W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.