Daily Sunspot Evaluation
Observation Sheet Monday, 19 September 1960
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)
- 57
- Relative number (R)
- 157
- Observer
- ET
- Reading
- all checks consistent
- File
- 19600919.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 23 | 85E | ||||
| 2 | J – 1 | 16 | 53E | ||||
| 3 | G – 2 | 8 | 68E | ||||
| 4 | C – 5 | -18 | 70E | ||||
| 5 | H – 25 | -20 | 31E | ||||
| 6 | J – 3 | -5 | 2W | ||||
| 7 | A – 1 | -4 | 62W | ||||
| 8 | A – 1 | 15 | 54W | ||||
| 9 | C – 13 | 22 | 13W | ||||
| 10 | A – 5 | 27 | 4W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.