Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 July 1961
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)
- 5
- Number of spots (f)
- 39
- Relative number (R)
- 89
- Observer
- ET
- Reading
- all checks consistent
- File
- 19610711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 5 | 18 | 40E | ||||
| 2 | H – 1 | 13 | 70E | ||||
| 3 | J – 3 | 3 | 15E | ||||
| 4 | F – 24 | -7 | 37E | ||||
| 5 | H – 6 | 13 | 60W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.