Daily Sunspot Evaluation
Observation Sheet Saturday, 15 August 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)
- 11
- Number of spots (f)
- 61
- Relative number (R)
- 171
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590815.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 18 | 7E | ||||
| 2 | E – 20 | 14 | 12E | ||||
| 3 | ? – 1 | 18 | 85E | ||||
| 4 | J – 2 | 12 | 65E | ||||
| 5 | E – 15 | 6 | 63E | ||||
| 6 | A – 3 | 5 | 42E | ||||
| 7 | A – 1 | -6 | 60E | ||||
| 8 | A – 1 | -7 | 25E | ||||
| 9 | D – 9 | -6 | 16W | ||||
| 10 | B – 7 | 16 | 42W | ||||
| 11 | J – 1 | 20 | 72W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.