Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 February 1952
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)
- 42
- Relative number (R)
- 62
- Observer
- AK
- Reading
- all checks consistent
- File
- 19520219.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 40 | 0.19 | 228 | |
| 2 | C – 2 | 0.44 | 336 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.