Daily Sunspot Evaluation
Observation Sheet Thursday, 26 February 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)
- 12
- Number of spots (f)
- 108
- Relative number (R)
- 228
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590226.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 30 | 22 | 1E | ||||
| 2 | B – 2 | 8 | 27E | ||||
| 3 | ? – 1 | -1 | 78E | ||||
| 4 | C – 12 | -5 | 46E | ||||
| 5 | A – 1 | -9 | 46E | ||||
| 6 | B – 4 | -19 | 22E | ||||
| 7 | D – 9 | -33 | 4W | ||||
| 8 | H – 1 | 10 | 60W | ||||
| 9 | ? – 7 | 17 | 70W | ||||
| 10 | D – 21 | 28 | 58W | ||||
| 11 | C – 7 | 22 | 31W | ||||
| 12 | C – 13 | 17 | 25W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.