Daily Sunspot Evaluation
Observation Sheet Friday, 16 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)
- 7
- Number of spots (f)
- 56
- Relative number (R)
- 126
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19701016.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 20 | 11 | 10E | 43 ⚠ | |||
| 2 | J – 1 | 18 | 27E | 32 | |||
| 3 | J – 1 | 11 | 70E | 340 ⚠ | |||
| 4 | G – 6 | -13 | 14E | 45 | |||
| 5 | E – 20 | 5 | 02W | 61 | |||
| 6 | C – 5 | -13 | 61W | 120 | |||
| 7 | G – 3 | 17 | 73W | 132 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.