Daily Sunspot Evaluation
Observation Sheet Monday, 13 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)
- 56
- Relative number (R)
- 116
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -13 | 65E | 177 | |||
| 2 | E – 39 | -13 | 13W | 255 | |||
| 3 | H – 10 | -7 | 40W | 282 | |||
| 4 | G – 2 | 5 | 55W | 297 | |||
| 5 | J – 2 | 24 | 59W | 301 | |||
| 6 | J – 2 | 24 | 33W | 275 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.