Daily Sunspot Evaluation
Observation Sheet Saturday, 9 May 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)
- 9
- Number of spots (f)
- 130
- Relative number (R)
- 220
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 23 | 29 | 38E | ||||
| 2 | F – 29 | 11 | 18E | ||||
| 3 | F – 15 | 17 | 71E | ||||
| 4 | J – 1 | 10 | 73E | ||||
| 5 | D – 18 | -18 | 23E | ||||
| 6 | C – 5 | -21 | 10E | ||||
| 7 | E – 34 | -14 | 6E | ||||
| 8 | A – 2 | 3 | 68W | ||||
| 9 | J – 3 | 14 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.