Daily Sunspot Evaluation
Observation Sheet Friday, 21 January 1966
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)
- 3
- Number of spots (f)
- 18
- Relative number (R)
- 48
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 5 | 32 | 8E | 195 | 5246 | ||
| 2 | E – 9 | 18 | 22W | 225 | |||
| 3 | J – 4 | 28 | 25W | 228 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.