Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 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)
- 73
- Relative number (R)
- 213
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 6 | 13 | 0 | ||||
| 2 | H – 4 | 17 | 54E | ||||
| 3 | D – 5 | 7 | 32E | ||||
| 4 | D – 10 | 9 | 42E | ||||
| 5 | A – 1 | 9 | 56E | ||||
| 6 | B – 6 | -4 | 20E | ||||
| 7 | B – 5 | -13 | 35E | ||||
| 8 | ? – 1 | -16 | 84E | ||||
| 9 | B – 2 | -25 | 10E | ||||
| 10 | F – 24 | -28 | 29W | ||||
| 11 | C – 4 | 17 | 57W | ||||
| 12 | A – 1 | 11 | 31W | ||||
| 13 | C – 3 | 23 | 28W | ||||
| 14 | A – 1 | 39 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.