Daily Sunspot Evaluation
Observation Sheet Saturday, 2 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)
- 50
- Relative number (R)
- 140
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 16 | 00 | 352 | |||
| 2 | B – 7 | 17 | 09E | 343 | |||
| 3 | J – 3 | 16 | 23E | 329 | |||
| 4 | D – 9 | -9 | 33E | 319 | |||
| 5 | C – 11 | -7 | 33W | 25 | |||
| 6 | A – 1 | -3 | 24W | 16 | |||
| 7 | J – 1 | -6 | 46W | 38 | |||
| 8 | B – 9 | 13 | 23W | 15 | |||
| 9 | J – 6 | 14 | 15W | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.