Daily Sunspot Evaluation
Observation Sheet Thursday, 1 May 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)
- 12
- Number of spots (f)
- 177
- Relative number (R)
- 297
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580501.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 28 | 0 | ||||
| 2 | E – 51 | 18 | 7E | ||||
| 3 | A – 3 | 24 | 24E | ||||
| 4 | ? – 1 | 25 | 76E | ||||
| 5 | ? – 1 | 12 | 74E | ||||
| 6 | E – 91 | -15 | 27E | ||||
| 7 | C – 4 | -17 | 7E | ||||
| 8 | A – 7 | -24 | 3E | ||||
| 9 | C – 5 | -16 | 26W | ||||
| 10 | D – 4 | 11 | 66W | ||||
| 11 | J – 1 | 17 | 53W | ||||
| 12 | B – 7 | 26 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.