Daily Sunspot Evaluation
Observation Sheet Tuesday, 10 September 1968
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)
- 9
- Number of spots (f)
- 54
- Relative number (R)
- 144
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19680910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 14 | 67E | 24 | |||
| 2 | ? – 3 | 7 | 67E | 24 | |||
| 3 | H – 9 | -13 | 67E | 24 | |||
| 4 | B – 3 | -22 | 57 | 34 | |||
| 5 | D – 9 | -12 | 18E | 73 | |||
| 6 | B – 10 | -19 | 08E | 83 | |||
| 7 | D – 12 | -21 | 02W | 93 | |||
| 8 | J – 1 | -2 | 63W | 154 | |||
| 9 | B – 4 | 11 | 21W | 112 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.