Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 September 1968
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)
- 6
- Number of spots (f)
- 51
- Relative number (R)
- 111
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680904.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -2 | 15E | 152 | |||
| 2 | A – 2 | -28 | 33E | 134 | |||
| 3 | A – 1 | -27 | 15E | 152 | |||
| 4 | E – 32 | -15 | 07W | 174 | |||
| 5 | C – 3 | -20 | 73W | 240 | |||
| 6 | H – 12 | 12 | 22W | 189 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.