Daily Sunspot Evaluation
Observation Sheet Sunday, 4 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)
- 16
- Number of spots (f)
- 146
- Relative number (R)
- 306
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580504.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 26 | 25E | ||||
| 2 | G – 14 | 27 | 41E | ||||
| 3 | J – 1 | 11 | 34E | ||||
| 4 | ? – 1 | 15 | 77E | ||||
| 5 | C – 11 | 2 | 30E | ||||
| 6 | A – 1 | -17 | 2E | ||||
| 7 | F – 65 | -14 | 15W | ||||
| 8 | J – 1 | -17 | 32W | ||||
| 9 | H – 4 | -17 | 66W | ||||
| 10 | A – 3 | 22 | 65W | ||||
| 11 | H – 6 | 18 | 36W | ||||
| 12 | B – 2 | 29 | 58W | ||||
| 13 | J – 1 | 28 | 39W | ||||
| 14 | J – 9 | 19 | 25W | ||||
| 15 | D – 21 | 24 | 18W | ||||
| 16 | A – 1 | 14 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.