Daily Sunspot Evaluation
Observation Sheet Sunday, 12 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)
- 9
- Number of spots (f)
- 58
- Relative number (R)
- 148
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 9 | 17 | 9E | ||||
| 2 | H – 17 | 16 | 32E | ||||
| 3 | A – 1 | 6 | 20E | ||||
| 4 | ? – 2 | 9 | 74E | ||||
| 5 | J – 2 | 4 | 52E | ||||
| 6 | J – 1 | -25 | 69E | ||||
| 7 | E – 15 | -15 | 2E | ||||
| 8 | C – 2 | -12 | 37W | ||||
| 9 | E – 9 | 7 | 60W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.