Daily Sunspot Evaluation
Observation Sheet Saturday, 21 January 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)
- 8
- Number of spots (f)
- 66
- Relative number (R)
- 146
- Observer
- SB
- Reading
- all checks consistent
- File
- 19670121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 28 | 19E | 46 | |||
| 2 | HC – 16 | 17 | 21E | 44 | |||
| 3 | J – 1 | 16 | 43E | 22 | |||
| 4 | C – 14 | 19 | 55E | 10 | |||
| 5 | D – 10 | -17 | 26E | 39 | |||
| 6 | ? – 3 | -32 | 74W | 139 | |||
| 7 | J – 1 | 24 | 42W | 108 | |||
| 8 | D – 20 | 13 | 5W | 70 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.