Daily Sunspot Evaluation
Observation Sheet Saturday, 11 July 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)
- 8
- Number of spots (f)
- 62
- Relative number (R)
- 142
- Observer
- HA
- Reading
- all checks consistent
- File
- 19700711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 19 | 06E | 257 | |||
| 2 | A – 1 | 21 | 13E | 250 | |||
| 3 | J – 2 | 16 | 33E | 230 | |||
| 4 | D – 11 | 18 | 60E | 203 | |||
| 5 | C – 6 | 17 | 66E | 197 | |||
| 6 | E – 22 | -10 | 57W | 320 | |||
| 7 | A – 6 | 13 | 48W | 311 | |||
| 8 | H – 12 | 17 | 03W | 266 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.