Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 8
- Number of spots (f)
- 57
- Relative number (R)
- 137
- Observer
- MÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 16 | 14 | 0 | 235 | |||
| 2 | A – 1 | 1 | 66E | 169 | |||
| 3 | A – 1 | -20 | 66E | 169 | |||
| 4 | A – 3 | -18 | 53E | 192 ⚠ | |||
| 5 | D – 13 | -5 | 46E | 219 ⚠ | |||
| 6 | G – 6 | -18 | 09W | 244 | |||
| 7 | J – 4 | -11 | 12W | 247 | |||
| 8 | C – 13 | 7 | 27W | 262 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.