Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 August 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)
- 5
- Number of spots (f)
- 94
- Relative number (R)
- 144
- Observer
- FA
- Reading
- all checks consistent
- File
- 19700811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 7 | 20 | 03E | 210 | |||
| 2 | E – 21 | 19 | 13E | 200 | |||
| 3 | A – 1 | -18 | 14E | 199 | |||
| 4 | D – 14 | -7 | 35W | 248 | |||
| 5 | E – 51 | 17 | 23W | 236 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.