Daily Sunspot Evaluation
Observation Sheet Friday, 10 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)
- 63
- Relative number (R)
- 153
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 8 | 17 | 30E | ||||
| 2 | B – 3 | 20 | 42E | ||||
| 3 | H – 16 | 16 | 59E | ||||
| 4 | ? – 2 | 5 | 29E | ||||
| 5 | A – 1 | -10 | 2W | ||||
| 6 | B – 6 | 8 | 33W | ||||
| 7 | E – 23 | 11 | 76W | ||||
| 8 | J – 1 | 17 | 57W | ||||
| 9 | A – 3 | 20 | 20W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.