Daily Sunspot Evaluation
Observation Sheet Sunday, 3 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)
- 7
- Number of spots (f)
- 42
- Relative number (R)
- 112
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720903.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 16 | 09E | 329 | |||
| 2 | D – 10 | -9 | 18E | 320 | |||
| 3 | G – 9 | -9 | 48W | 26 | |||
| 4 | J – 2 | -3 | 38W | 16 | |||
| 5 | A – 1 | -5 | 61W | 39 | |||
| 6 | H – 4 | 16 | 13W | 351 | |||
| 7 | B – 6 | 17 | 02W | 340 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.