Daily Sunspot Evaluation
Observation Sheet Wednesday, 20 July 1966
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)
- 14
- Relative number (R)
- 64
- Observer
- SB
- Reading
- all checks consistent
- File
- 19660720.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 20 | 2E | 344 | |||
| 2 | A – 1 | 24 | 32E | 314 | |||
| 3 | G – 5 | -23 | 29E | 317 | |||
| 4 | A – 1 | 23 | 63W | 49 | |||
| 5 | H – 5 | 26 | 14W | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.