Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 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)
- 8
- Number of spots (f)
- 40
- Relative number (R)
- 120
- Observer
- KA
- Reading
- all checks consistent
- File
- 19550907.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | H – 3 | 0.84 | 29 | |
| 2 | A – 2 | 0.24 | 48 | |
| 3 | C – 9 | 0.6 | 76 | |
| 4 | B – 3 | 0.39 | 152 | |
| 5 | A – 3 | 0.25 | 171 | |
| 6 | B – 4 | 0.49 | 211 | |
| 7 | C – 14 | 0.84 | 265 | |
| 8 | A – 2 | 0.22 | 357 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.