Daily Sunspot Evaluation
Observation Sheet Thursday, 16 February 1967
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)
- 5
- Number of spots (f)
- 20
- Relative number (R)
- 70
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 21 | 80E | 2 | |||
| 2 | J – 1 | 15 | 60E | 22 | |||
| 3 | J – 2 | -25 | 45E | 37 | |||
| 4 | D – 14 | 15 | 27W | 109 | |||
| 5 | J – 1 | 13 | 4W | 86 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.