Daily Sunspot Evaluation
Observation Sheet Wednesday, 2 September 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)
- 9
- Number of spots (f)
- 81
- Relative number (R)
- 171
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | 21 | 07E | 275 | |||
| 2 | A – 6 | 19 | 21E | 261 | |||
| 3 | C – 51 | 17 | 40E | 242 | |||
| 4 | ? – 1 | 22 | 78E | 204 | |||
| 5 | A – 2 | 3 | 08E | 274 | |||
| 6 | B – 12 | -6 | 18E | 264 | |||
| 7 | A – 3 | -7 | 11E | 271 | |||
| 8 | J – 1 | -9 | 61W | 343 | |||
| 9 | A – 1 | 12 | 77W | 359 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.