Daily Sunspot Evaluation
Observation Sheet Wednesday, 6 September 1972
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)
- 55
- Relative number (R)
- 145
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720906.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | -7 | 01W | 301 | |||
| 2 | A – 1 | -25 | 28W | 328 | |||
| 3 | C – 21 | -8 | 19W | 319 | |||
| 4 | B – 6 | -15 | 43W | 343 | |||
| 5 | A – 2 | 6 | 09W | 308 | |||
| 6 | ? – 3 | -5 | 84W | 24 | |||
| 7 | B – 11 | 15 | 30W | 330 | |||
| 8 | J – 1 | 17 | 52W | 352 | |||
| 9 | A – 5 | 17 | 38W | 338 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.