Daily Sunspot Evaluation
Observation Sheet Sunday, 1 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)
- 17
- Relative number (R)
- 77
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680901.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 11 | 12 | 23E | 187 | |||
| 2 | A – 1 | 16 | 47E | 163 | |||
| 3 | S – 1 | -4 | 60E | 150 | |||
| 4 | ? – 2 | -27 | 66E | 144 | |||
| 5 | A – 1 | -9 | 03W | 213 | |||
| 6 | A – 1 | -7 | 37W | 247 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.