Daily Sunspot Evaluation
Observation Sheet Saturday, 24 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)
- 7
- Number of spots (f)
- 75
- Relative number (R)
- 145
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680224.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 41 | 12 | 35E | 166 | |||
| 2 | ? – 2 | 13 | 80E | 121 | |||
| 3 | C – 13 | -27 | 51E | 150 | |||
| 4 | A – 1 | -31 | 2W | 203 | |||
| 5 | A – 2 | -27 | 15W | 216 | |||
| 6 | A – 1 | 15 | 53W | 254 | |||
| 7 | B – 15 | 8 | 17W | 218 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.