Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 August 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)
- 11
- Number of spots (f)
- 52
- Relative number (R)
- 162
- Observer
- ET
- Reading
- all checks consistent
- File
- 19610816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 6 | 12 | 4E | ||||
| 2 | B – 5 | 11 | 13E | ||||
| 3 | A – 1 | 5 | 13E | ||||
| 4 | J – 1 | 7 | 67E | ||||
| 5 | J – 2 | 1 | 35E | ||||
| 6 | A – 1 | 0 | 23E | ||||
| 7 | A – 1 | -16 | 54E | ||||
| 8 | A – 2 | -3 | 6W | ||||
| 9 | B – 13 | -8 | 23W | ||||
| 10 | D – 9 | 13 | 28W | ||||
| 11 | H – 11 | 8 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.