Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 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)
- 13
- Number of spots (f)
- 149
- Relative number (R)
- 279
- Observer
- SG
- Reading
- all checks consistent
- File
- 19580429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 16 | 2E | ||||
| 2 | H – 1 | 28 | 26E | ||||
| 3 | E – 38 | 19 | 35E | ||||
| 4 | A – 1 | 12 | 29E | ||||
| 5 | F – 62 | -16 | 55E | ||||
| 6 | C – 8 | -18 | 34E | ||||
| 7 | B – 14 | -24 | 30E | ||||
| 8 | A – 1 | -22 | 5E | ||||
| 9 | H – 1 | -16 | 3E | ||||
| 10 | A – 2 | 8 | 53W | ||||
| 11 | ? – 1 | 13 | 84W | ||||
| 12 | E – 14 | 12 | 39W | ||||
| 13 | H – 4 | 17 | 26W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.