Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 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)
- 4
- Number of spots (f)
- 18
- Relative number (R)
- 58
- Observer
- MH
- Reading
- all checks consistent
- File
- 19551004.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 6 | 0.42 | 51 | |
| 2 | C – 8 | 0.69 | 90 | |
| 3 | A – 1 | 0.84 | 95 | |
| 4 | A – 3 | 0.93 | 98 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.