Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 6
- Number of spots (f)
- 80
- Relative number (R)
- 140
- Observer
- HA
- Reading
- all checks consistent
- File
- 19701012.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 18 | 81E | 33 | |||
| 2 | A – 2 | 9 | 68E | 46 | |||
| 3 | G – 12 | 5 | 59E | 55 | |||
| 4 | D – 23 | -13 | 04W | 118 | |||
| 5 | E – 9 | -11 | 71W | 185 | |||
| 6 | E – 33 | 18 | 07W | 121 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.