Daily Sunspot Evaluation
Observation Sheet Thursday, 20 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)
- 9
- Number of spots (f)
- 124
- Relative number (R)
- 214
- Observer
- BG
- Reading
- all checks consistent
- File
- 19590820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 28 | 20E | ||||
| 2 | F – 26 | 17 | 67E | ||||
| 3 | A – 4 | -4 | 6E | ||||
| 4 | A – 6 | -23 | 14E | ||||
| 5 | B – 2 | -16 | 65W | ||||
| 6 | E – 70 | 7 | 4W | ||||
| 7 | E – 8 | 14 | 57W | ||||
| 8 | B – 3 | 21 | 17W. | ||||
| 9 | A – 3 | 24 | 63W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.