Daily Sunspot Evaluation
Observation Sheet Sunday, 3 April 1960
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)
- 10
- Number of spots (f)
- 83
- Relative number (R)
- 183
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600403.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 7 | 18 | 24E | ||||
| 2 | C – 7 | 11 | 39E | ||||
| 3 | A – 1 | 8 | 50E | ||||
| 4 | C – 6 | -6 | 45E | ||||
| 5 | A – 1 | -10 | 47E | ||||
| 6 | C – 2 | -18 | 65E | ||||
| 7 | A – 1 | -19 | 55E | ||||
| 8 | E – 21 | -8 | 6E | ||||
| 9 | A – 1 | 1 | 28W | ||||
| 10 | F – 36 | 11 | 39W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.