Daily Sunspot Evaluation
Observation Sheet Thursday, 13 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)
- 8
- Number of spots (f)
- 29
- Relative number (R)
- 109
- Observer
- DK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19661013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 27 | 88E | 216 | |||
| 2 | J – 2 | 23 | 76E | 228 | |||
| 3 | D – 10 | 11 | 66E | 244 ⚠ | |||
| 4 | T – 5 | 18 | 56E | 249 | |||
| 5 | H – 1 | 6 | 47E | 157 ⚠ | |||
| 6 | A – 1 | 21 | 59W | 3 | |||
| 7 | A – 4 | 24 | 47W | 351 | |||
| 8 | C – 5 | 23 | 34W | 337 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.