Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 5
- Number of spots (f)
- 40
- Relative number (R)
- 90
- Observer
- SB
- Reading
- all checks consistent
- File
- 19670919.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 33 | -24 | 02E | 120 | |||
| 2 | J – 1 | -30 | 24W | 146 | |||
| 3 | H – 2 | 11 | 70W | 192 | |||
| 4 | A – 1 | 12 | 13W | 135 | |||
| 5 | ? – 3 | 20 | 82W | 204 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.