Daily Sunspot Evaluation
Observation Sheet Friday, 21 September 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)
- 2
- Number of spots (f)
- 12
- Relative number (R)
- 32
- Observer
- FY
- Reading
- all checks consistent
- File
- 19620921.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | -16 | 3W | 4366 | |||
| 2 | H – 5 | 22 | 59W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.