Daily Sunspot Evaluation
Observation Sheet Thursday, 13 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)
- 8
- Number of spots (f)
- 36
- Relative number (R)
- 116
- Observer
- KA
- Reading
- all checks consistent
- File
- 19590813.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 15 | 13 | 38E | ||||
| 2 | ? – 1 | 7 | 83E | ||||
| 3 | D – 5 | 7 | 9E | ||||
| 4 | T – 1 | -13 | 69W | ||||
| 5 | T – 2 | -9 | 58W | ||||
| 6 | T – 4 | 2 | 80W | ||||
| 7 | C – 2 | 21 | 44W | ||||
| 8 | H – 6 | 16 | 17W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.