Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 5
- Number of spots (f)
- 65
- Relative number (R)
- 115
- Observer
- BG
- Reading
- all checks consistent
- File
- 19600419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 15 | 25 | 15E | ||||
| 2 | E – 29 | 12 | 1E | ||||
| 3 | E – 18 | -9 | 41W | ||||
| 4 | ? – 2 | 11 | 80W | ||||
| 5 | A – 1 | 13 | 71W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.