Daily Sunspot Evaluation
Observation Sheet Thursday, 16 October 1969
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)
- 13
- Relative number (R)
- 63
- Observer
- SM
- Reading
- all checks consistent
- File
- 19691016.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 4 | 29E | 170 | |||
| 2 | A – 1 | -27 | 38W | 237 | |||
| 3 | C – 7 | -4 | 42W | 241 | |||
| 4 | J – 1 | -16 | 80W | 279 | |||
| 5 | H – 1 | 10 | 59W | 258 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.