Daily Sunspot Evaluation
Observation Sheet Thursday, 19 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)
- 37
- Relative number (R)
- 77
- Observer
- FY
- Reading
- all checks consistent
- File
- 19620419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 11 | 20E | 4226 | |||
| 2 | A – 1 | 14 | 35E | ||||
| 3 | D – 3 | 11 | 68W | ||||
| 4 | E – 31 | 8 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.