Daily Sunspot Evaluation
Observation Sheet Sunday, 2 September 1951
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)
- 6
- Number of spots (f)
- 21
- Relative number (R)
- 81
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510902.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 5 | 0.19 | 14 | |
| 2 | G – 12 | 0.74 | 104 | |
| 3 | J – 1 | 0.76 | 125 | |
| 4 | A – 1 | 0.13 | 285 | |
| 5 | ? – 1 | 0.97 | 298 | |
| 6 | A – 1 | 0.03 | 351 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.