Daily Sunspot Evaluation
Observation Sheet Saturday, 5 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)
- 17
- Number of spots (f)
- 182
- Relative number (R)
- 352
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 25 | 9E | ||||
| 2 | B – 3 | 28 | 17E | ||||
| 3 | B – 10 | 13 | 22E | ||||
| 4 | C – 12 | 17 | 38E | ||||
| 5 | E – 37 | 14 | 53E | ||||
| 6 | J – 2 | 7 | 61E | ||||
| 7 | J – 3 | -23 | 34E | ||||
| 8 | E – 20 | -16 | 8W | ||||
| 9 | D – 11 | -25 | 23W | ||||
| 10 | A – 2 | -15 | 19W | ||||
| 11 | J – 5 | -23 | 68W | ||||
| 12 | ? – 1 | -22 | 80W | ||||
| 13 | H – 18 | -17 | 40W | ||||
| 14 | C – 6 | 8 | 47W | ||||
| 15 | J – 1 | 25 | 32W | ||||
| 16 | E – 37 | 31 | 11W | ||||
| 17 | B – 8 | 21 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.