Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 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)
- 17
- Number of spots (f)
- 96
- Relative number (R)
- 266
- Observer
- BG
- Reading
- all checks consistent
- File
- 19590811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 17 | 2E | ||||
| 2 | A – 1 | 10 | 3E | ||||
| 3 | B – 14 | 16 | 12E | ||||
| 4 | B – 2 | 22 | 57E | ||||
| 5 | E – 8 | 12 | 66E | ||||
| 6 | A – 1 | -28 | 33E | ||||
| 7 | A – 1 | -19 | 16E | ||||
| 8 | B – 2 | -20 | 53W | ||||
| 9 | J – 1 | -13 | 42W | ||||
| 10 | C – 15 | -8 | 31W | ||||
| 11 | E – 21 | 2 | 49W | ||||
| 12 | E – 5 | 11 | 64W | ||||
| 13 | A – 2 | 9 | 13W | ||||
| 14 | H – 10 | 21 | 20W | ||||
| 15 | A – 1 | 27 | 23W | ||||
| 16 | B – 8 | 14 | 8W | ||||
| 17 | A – 1 | 22 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.