Daily Sunspot Evaluation
Observation Sheet Saturday, 28 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)
- 5
- Number of spots (f)
- 84
- Relative number (R)
- 134
- Observer
- ED
- Reading
- all checks consistent
- File
- 19721028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 9 | 25E | 308 | |||
| 2 | A – 2 | 2 | 42E | 291 | |||
| 3 | F – 75 | -12 | 19E | 314 | |||
| 4 | J – 2 | -17 | 16W | 349 | |||
| 5 | J – 2 | -9 | 18W | 351 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.