Daily Sunspot Evaluation
Observation Sheet Friday, 29 August 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)
- 7
- Number of spots (f)
- 69
- Relative number (R)
- 139
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690829.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 10 | 11 | 42E | 70 | |||
| 2 | D – 20 | 6 | 36E | 76 | |||
| 3 | B – 7 | 2 | 52E | 60 | |||
| 4 | C – 10 | -9 | 11E | 101 | |||
| 5 | A – 1 | -13 | 13W | 125 | |||
| 6 | A – 1 | -7 | 21W | 133 | |||
| 7 | G – 20 | 11 | 16W | 128 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.