Daily Sunspot Evaluation
Observation Sheet Sunday, 26 April 1959
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)
- 10
- Number of spots (f)
- 81
- Relative number (R)
- 181
- Observer
- MH
- Reading
- all checks consistent
- File
- 19590426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | 30 | 47E | 3436 | |||
| 2 | C – 27 | 11 | 30E | ||||
| 3 | C – 14 | 13 | 43E | ||||
| 4 | H – 6 | 16 | 64E | ||||
| 5 | C – 7 | -8 | 40W | ||||
| 6 | ? – 1 | 16 | 80W | ||||
| 7 | ? – 2 | 20 | 67W | ||||
| 8 | A – 7 | 22 | 46W | ||||
| 9 | J – 2 | 21 | 26W | ||||
| 10 | H – 10 | 8 | 7W. |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.