Daily Sunspot Evaluation
Observation Sheet Friday, 6 October 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)
- 7
- Number of spots (f)
- 20
- Relative number (R)
- 90
- Observer
- FA
- Reading
- all checks consistent
- File
- 19721006.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | -7 | 08E | 255 | |||
| 2 | J – 1 | -9 | 11W | 274 | |||
| 3 | A – 3 | -4 | 12W | 275 | |||
| 4 | A – 2 | -9 | 76W | 339 | |||
| 5 | A – 4 | 10 | 45W | 308 | |||
| 6 | A – 1 | 17 | 18W | 281 | |||
| 7 | J – 1 | 17 | 11W | 274 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.