Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 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)
- 9
- Number of spots (f)
- 53
- Relative number (R)
- 143
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 3 | -6 | 40E | ||||
| 2 | J – 1 | -17 | 67E | ||||
| 3 | B – 5 | -12 | 2W | ||||
| 4 | J – 1 | -23 | 57W | ||||
| 5 | H – 15 | -17 | 41W | ||||
| 6 | A – 2 | -10 | 20W | ||||
| 7 | J – 3 | 3 | 62W | ||||
| 8 | C – 8 | 26 | 58W | ||||
| 9 | H – 15 | 19 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.