Daily Sunspot Evaluation
Observation Sheet Saturday, 26 January 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)
- 11
- Number of spots (f)
- 63
- Relative number (R)
- 173
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570126.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 1 | 23 | 0 | |
| 2 | J – 1 | 33 | 14 | |
| 3 | B – 4 | 25 | 15 | |
| 4 | B – 11 | 17 | 32 | |
| 5 | A – 3 | -17 | 45 | |
| 6 | J – 2 | -21 | 37 | |
| 7 | D – 12 | -17 | 24 | |
| 8 | A – 2 | -23 | 62 | |
| 9 | C – 5 | 10 | 55 | |
| 10 | H – 17 | 16 | 61 | |
| 11 | B – 5 | 28 | 26 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.