Daily Sunspot Evaluation
Observation Sheet Friday, 28 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)
- 10
- Number of spots (f)
- 38
- Relative number (R)
- 138
- Observer
- ET
- Reading
- all checks consistent
- File
- 19560928.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 34 | 41E | ||||
| 2 | J – 2 | 32 | 68E | ||||
| 3 | H – 3 | 20 | 38E | ||||
| 4 | A – 3 | -18 | 19E | ||||
| 5 | A – 4 | -28 | 23E | ||||
| 6 | E – 10 | -28 | 12E | ||||
| 7 | C – 9 | -14 | 5E | ||||
| 8 | ? – 1 | 13 | 38W | ||||
| 9 | J – 2 | 22 | 22W | ||||
| 10 | B – 3 | 47 | 16W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.