Daily Sunspot Evaluation
Observation Sheet Sunday, 29 June 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)
- 4
- Number of spots (f)
- 23
- Relative number (R)
- 63
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690629.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 15 | 75E | 124 | |||
| 2 | C – 17 | -10 | 22E | 177 | |||
| 3 | A – 1 | 9 | 44W | 243 | |||
| 4 | A – 3 | 16 | 44W | 213 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.