Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 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)
- 10
- Number of spots (f)
- 83
- Relative number (R)
- 183
- Observer
- SG
- Reading
- all checks consistent
- File
- 19590715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 31 | 56E | ||||
| 2 | B – 10 | 19 | 30E | ||||
| 3 | H – 4 | 25 | 51E | ||||
| 4 | H – 7 | 13 | 63E | ||||
| 5 | G – 2 | 9 | 32E | ||||
| 6 | ? – 1 | 9 | 85E | ||||
| 7 | E – 17 | 4 | 12E | ||||
| 8 | A – 2 | -23 | 28E | ||||
| 9 | E – 14 | -15 | 37W | ||||
| 10 | F – 25 | 16 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.