Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 February 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)
- 13
- Number of spots (f)
- 77
- Relative number (R)
- 207
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 4 | 32 | 17E | ||||
| 2 | H – 11 | 22 | 16E | ||||
| 3 | H – 4 | 22 | 26E | ||||
| 4 | G – 6 | 11 | 62E | ||||
| 5 | B – 3 | -7 | 61E | ||||
| 6 | D – 6 | -24 | 63E | ||||
| 7 | C – 8 | -21 | 31E | ||||
| 8 | J – 1 | -24 | 58W | ||||
| 9 | ? – 1 | -17 | 84W | ||||
| 10 | E – 20 | -15 | 54W | ||||
| 11 | D – 6 | 2 | 30W | ||||
| 12 | G – 5 | 17 | 24W | ||||
| 13 | A – 2 | 21 | 13W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.