Daily Sunspot Evaluation
Observation Sheet Friday, 15 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)
- 12
- Number of spots (f)
- 43
- Relative number (R)
- 163
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600115.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 26 | 20E | ||||
| 2 | A – 2 | 9 | 27E | ||||
| 3 | B – 4 | 6 | 37E | ||||
| 4 | J – 1 | 16 | 66E | ||||
| 5 | C – 11 | 6 | 52E | ||||
| 6 | J – 1 | -17 | 39E | ||||
| 7 | J – 3 | -8 | 8E | ||||
| 8 | B – 8 | -12 | 29W | ||||
| 9 | ? – 1 | -23 | 86W | ||||
| 10 | J – 3 | -18 | 67W | ||||
| 11 | H – 5 | 18 | 47W | ||||
| 12 | A – 1 | 11 | 20W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.