Daily Sunspot Evaluation
Observation Sheet Friday, 16 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)
- 55
- Relative number (R)
- 115
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 3 | 72E | 231 | |||
| 2 | ? – 2 | -9 | 82E | 221 | |||
| 3 | A – 3 | -19 | 16E | 287 | |||
| 4 | C – 10 | -25 | 3E | 300 | |||
| 5 | J – 5 | -15 | 24W | 327 | |||
| 6 | E – 33 | 19 | 32W | 335 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.