Daily Sunspot Evaluation
Observation Sheet Saturday, 22 April 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)
- 4
- Number of spots (f)
- 12
- Relative number (R)
- 52
- Observer
- SB
- Reading
- all checks consistent
- File
- 19670422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 24 | 13E | 293 | |||
| 2 | J – 2 | 23 | 12E | 294 | |||
| 3 | C – 6 | -21 | 58W | 4 | |||
| 4 | H – 3 | 21 | 37W | 343 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.