Daily Sunspot Evaluation
Observation Sheet Saturday, 18 January 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)
- 17
- Relative number (R)
- 77
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 8 | 14 | 32E | 145 | |||
| 2 | D – 4 | 23 | 46E | 131 | |||
| 3 | ? – 1 | 17 | 74E | 103 | |||
| 4 | G – 2 | -17 | 43E | 134 | |||
| 5 | J – 1 | -14 | 0 | 177 | |||
| 6 | J – 1 | -15 | 84W | 261 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.