Daily Sunspot Evaluation
Observation Sheet Sunday, 15 April 1962
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)
- 4
- Number of spots (f)
- 54
- Relative number (R)
- 94
- Observer
- PO
- Reading
- all checks consistent
- File
- 19620415.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 22 | 8 | 48E | ||||
| 2 | ? – 4 | 9 | 76E | ||||
| 3 | J – 2 | -7 | 30E | ||||
| 4 | E – 26 | 10 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.