Daily Sunspot Evaluation
Observation Sheet Monday, 29 December 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)
- 12
- Number of spots (f)
- 67
- Relative number (R)
- 187
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19691229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 13 | 36E | 266 | |||
| 2 | C – 7 | 12 | 61E | 241 | |||
| 3 | D – 23 | -21 | 15E | 287 | |||
| 4 | J – 1 | -16 | 19W | 321 | |||
| 5 | C – 3 | -22 | 18W | 350 ⚠ | |||
| 6 | H – 4 | -14 | 68W | 40 ⚠ | |||
| 7 | C – 13 | -8 | 31W | 333 | |||
| 8 | A – 5 | -8 | 58W | 0 | |||
| 9 | J – 4 | -4 | 48W | 350 | |||
| 10 | ? – 1 | 11 | 71W | 13 | |||
| 11 | A – 3 | 10 | 16W | 318 | |||
| 12 | J – 2 | 22 | 17W | 319 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.