Daily Sunspot Evaluation
Observation Sheet Monday, 17 October 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)
- 30
- Relative number (R)
- 60
- Observer
- SB
- Reading
- all checks consistent
- File
- 19661017.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 22 | 22 | 05E | 245 | |||
| 2 | B – 7 | 25 | 18E | 232 | |||
| 3 | H – 1 | 7 | 9W | 257 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.