Daily Sunspot Evaluation
Observation Sheet Saturday, 10 February 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)
- 6
- Number of spots (f)
- 79
- Relative number (R)
- 139
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 20 | 7E | 17 | |||
| 2 | F – 38 | 19 | 50E | 334 | |||
| 3 | H – 8 | -16 | 59E | 325 | |||
| 4 | J – 2 | -14 | 70W | 94 | |||
| 5 | B – 19 | 12 | 48W | 72 | |||
| 6 | B – 4 | 20 | 7W | 31 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.