Daily Sunspot Evaluation
Observation Sheet Friday, 23 September 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)
- 3
- Number of spots (f)
- 50
- Relative number (R)
- 80
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 29 | 23 | 54E | 153 | |||
| 2 | H – 8 | 67 | 49W | 256 | |||
| 3 | E – 13 | 22 | 24W | 231 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.