Daily Sunspot Evaluation
Observation Sheet Saturday, 26 April 1958
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)
- 15
- Number of spots (f)
- 108
- Relative number (R)
- 258
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 38 | 9 | 1E | ||||
| 2 | H – 6 | 16 | 14E | ||||
| 3 | B – 2 | 8 | 13E | ||||
| 4 | B – 4 | 16 | 28E | ||||
| 5 | ? – 1 | 28 | 63E | ||||
| 6 | ? – 9 | 18 | 75E | ||||
| 7 | B – 4 | 9 | 46E | ||||
| 8 | ? – 1 | -17 | 74E | ||||
| 9 | H – 1 | -17 | 42E | ||||
| 10 | A – 1 | -21 | 59E | ||||
| 11 | B – 3 | -12 | 12W | ||||
| 12 | H – 15 | -23 | 70W | ||||
| 13 | B – 10 | -6 | 19W | ||||
| 14 | H – 10 | 12 | 41W | ||||
| 15 | T – 3 | 7 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.