Daily Sunspot Evaluation
Observation Sheet Saturday, 19 February 1966
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)
- 2
- Number of spots (f)
- 13
- Relative number (R)
- 33
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 23 | 31°E | 450 | |||
| 2 | C – 7 | 31 | 7°W | 188 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.