Daily Sunspot Evaluation
Observation Sheet Saturday, 3 September 1955
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)
- 20
- Relative number (R)
- 90
- Observer
- MH
- Reading
- all checks consistent
- File
- 19550903.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 4 | 0.37 | 54 | |
| 2 | B – 4 | 0.6 | 68 | |
| 3 | J – 1 | 0.8 | 83 | |
| 4 | ? – 1 | 0.98 | 85 | |
| 5 | C – 6 | 0.78 | 94 | |
| 6 | J – 2 | 0.83 | 143 | |
| 7 | A – 2 | 0.64 | 250 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.