Daily Sunspot Evaluation
Observation Sheet Sunday, 14 September 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)
- 6
- Number of spots (f)
- 64
- Relative number (R)
- 124
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 8 | 04E | 260 | |||
| 2 | D – 17 | 14 | 26E | 235 | |||
| 3 | C – 16 | -4 | 42E | 219 | |||
| 4 | D – 14 | -8 | 17E | 244 | |||
| 5 | H – 5 | -18 | 15E | 246 | |||
| 6 | D – 8 | -31 | 63W | 324 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.