Daily Sunspot Evaluation
Observation Sheet Sunday, 9 October 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)
- 9
- Number of spots (f)
- 27
- Relative number (R)
- 117
- Observer
- WG
- Reading
- all checks consistent
- File
- 19551009.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 8 | 0.39 | 27 | |
| 2 | C – 2 | 0.86 | 142 | |
| 3 | A – 1 | 0.81 | 146 | |
| 4 | A – 1 | 0.91 | 147 | |
| 5 | A – 4 | 0.78 | 262 | |
| 6 | A – 3 | 0.95 | 322 | |
| 7 | A – 2 | 0.87 | 327 | |
| 8 | J – 1 | 0.53 | 328 | |
| 9 | A – 5 | 0.39 | 341 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.