Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 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)
- 14
- Number of spots (f)
- 152
- Relative number (R)
- 292
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 17 | 13 | 16E | ||||
| 2 | J – 3 | 17 | 67E | ||||
| 3 | D – 25 | 8 | 51E | ||||
| 4 | B – 7 | 9 | 68E | ||||
| 5 | B – 3 | -2 | 37E | ||||
| 6 | B – 6 | -7 | 36E | ||||
| 7 | D – 7 | -12 | 48E | ||||
| 8 | F – 44 | -22 | 15W | ||||
| 9 | B – 3 | -26 | 73W | ||||
| 10 | D – 21 | 17 | 42W | ||||
| 11 | A – 1 | 22 | 39W | ||||
| 12 | J – 1 | 35 | 48W | ||||
| 13 | D – 12 | 23 | 44W | ||||
| 14 | J – 2 | 39 | 44W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.