Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 7
- Number of spots (f)
- 31
- Relative number (R)
- 101
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600119.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 15 | 10E | ||||
| 2 | H – 3 | 27 | 31E | ||||
| 3 | A – 1 | 20 | 35E | ||||
| 4 | H – 5 | 8 | 26E | ||||
| 5 | D – 6 | 13 | 45E | ||||
| 6 | A – 2 | -17 | 15W | ||||
| 7 | C – 12 | 6 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.