Daily Sunspot Evaluation
Observation Sheet Wednesday, 20 January 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)
- 8
- Number of spots (f)
- 39
- Relative number (R)
- 119
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 7 | 28 | 20E | ||||
| 2 | C – 9 | 8 | 13E | ||||
| 3 | H – 10 | 13 | 33E | ||||
| 4 | ? – 1 | -9 | 81E | ||||
| 5 | B – 4 | -14 | 8W | ||||
| 6 | C – 4 | 6 | 15W | ||||
| 7 | A – 1 | 18 | 15W | ||||
| 8 | C – 3 | 17 | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.