Daily Sunspot Evaluation
Observation Sheet Monday, 13 July 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)
- 13
- Number of spots (f)
- 96
- Relative number (R)
- 226
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | R – 3 | 19 | 6E | ||||
| 2 | H – 28 | 17 | 16E | ||||
| 3 | H – 5 | 30 | 83E | ||||
| 4 | H – 1 | 25 | 76E | ||||
| 5 | ? – 1 | 12 | 85E | ||||
| 6 | C – 4 | 9 | 58E | ||||
| 7 | H – 4 | 4 | 32E | ||||
| 8 | A – 2 | -25 | 54E | ||||
| 9 | B – 2 | -28 | 55E | ||||
| 10 | E – 28 | -15 | 12W | ||||
| 11 | E – 9 | 8 | 76W | ||||
| 12 | A – 2 | 17 | 12W | ||||
| 13 | B – 7 | 18 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.