Daily Sunspot Evaluation
Observation Sheet Saturday, 16 September 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)
- 19
- Relative number (R)
- 59
- Observer
- SB
- Reading
- all checks consistent
- File
- 19670916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | -24 | 41E | 121 | |||
| 2 | J – 1 | -29 | 14E | 148 | |||
| 3 | A – 2 | -20 | 68W | 230 | |||
| 4 | G – 12 | 12 | 26W | 188 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.