Daily Sunspot Evaluation
Observation Sheet Thursday, 8 October 1970
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)
- 102
- Relative number (R)
- 142
- Observer
- HA
- Reading
- all checks consistent
- File
- 19701008.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 12 | 17 | 46E | 121 | |||
| 2 | C – 8 | -12 | 57E | 110 | |||
| 3 | E – 75 | -11 | 16W | 183 | |||
| 4 | ? – 7 | 17 | 84W | 250 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.