Daily Sunspot Evaluation
Observation Sheet Wednesday, 2 October 1957
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)
- 15
- Number of spots (f)
- 114
- Relative number (R)
- 264
- Observer
- FY
- Reading
- all checks consistent
- File
- 19571002.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 38 | 28 | 6 | |
| 2 | A – 3 | 42 | 51 | |
| 3 | A – 1 | 12 | 69 | |
| 4 | J – 1 | -5 | 46 | |
| 5 | D – 11 | -15 | 49 | |
| 6 | ? – 2 | -36 | 60 | |
| 7 | G – 7 | -23 | 31 | |
| 8 | C – 8 | -15 | 6 | |
| 9 | C – 7 | -28 | 49 | |
| 10 | A – 3 | 8 | 53 | |
| 11 | C – 9 | 13 | 67 | |
| 12 | J – 1 | 19 | 64 | |
| 13 | A – 2 | 22 | 57 | |
| 14 | B – 5 | 24 | 43 | |
| 15 | F – 16 | 17 | 18 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.