Daily Sunspot Evaluation
Observation Sheet Wednesday, 27 March 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)
- 10
- Number of spots (f)
- 33
- Relative number (R)
- 133
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570327.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 3 | 32 | 16 | |
| 2 | J – 1 | 11 | 14 | |
| 3 | B – 2 | 23 | 31 | |
| 4 | A – 2 | 21 | 45 | |
| 5 | B – 3 | 13 | 39 | |
| 6 | B – 2 | -27 | 12 | |
| 7 | F – 15 | -15 | 14 | |
| 8 | C – 3 | -17 | 53 | |
| 9 | A – 1 | 27 | 18 | |
| 10 | A – 1 | 39 | 25 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.