Daily Sunspot Evaluation
Observation Sheet Saturday, 23 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)
- 6
- Number of spots (f)
- 55
- Relative number (R)
- 115
- Observer
- BG
- Reading
- all checks consistent
- File
- 19600423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 5 | 12 | 60E | ||||
| 2 | A – 1 | -11 | 28E | ||||
| 3 | C – 20 | -17 | 26E | ||||
| 4 | C – 6 | 12 | 52W | ||||
| 5 | C – 11 | 8 | 21W | ||||
| 6 | D – 12 | 23 | 32W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.