Daily Sunspot Evaluation
Observation Sheet Friday, 10 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)
- 65
- Relative number (R)
- 145
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 9 | 16 | 12E | 264 | |||
| 2 | J – 2 | 17 | 48E | 228 | |||
| 3 | ? – 4 | 18 | 75E | 201 | |||
| 4 | B – 3 | 5 | 30E | 246 | |||
| 5 | A – 3 | 0 | 07W | 283 | |||
| 6 | E – 29 | -9 | 41W | 317 | |||
| 7 | ? – 2 | -9 | 85W | 1 | |||
| 8 | B – 13 | 13 | 34W | 310 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.