Daily Sunspot Evaluation
Observation Sheet Sunday, 8 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)
- 11
- Relative number (R)
- 81
- Observer
- HM
- Reading
- all checks consistent
- File
- 19721008.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | -27 | 16W | 254 | |||
| 2 | A – 1 | -6 | 21W | 259 | |||
| 3 | A – 1 | -8 | 38W | 276 | |||
| 4 | A – 1 | -16 | 68W | 306 | |||
| 5 | A – 2 | -4 | 38W | 276 | |||
| 6 | J – 3 | 17 | 36W | 274 | |||
| 7 | A – 1 | 21 | 30W | 268 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.