Daily Sunspot Evaluation
Observation Sheet Friday, 23 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)
- 76
- Relative number (R)
- 136
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 51 | 11 | 48E | 165 | |||
| 2 | ? – 14 | -26 | 64E | 149 | |||
| 3 | A – 4 | -29 | 5E | 208 | |||
| 4 | A – 2 | -27 | 2W | 215 | |||
| 5 | A – 3 | 2 | 20W | 233 | |||
| 6 | J – 2 | 27 | 68W | 281 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.