Daily Sunspot Evaluation
Observation Sheet Wednesday, 27 June 1951
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)
- 11
- Relative number (R)
- 51
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510627.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.88 | 74 | |
| 2 | C – 4 | 0.68 | 228 | |
| 3 | C – 3 | 0.88 | 281 | |
| 4 | J – 3 | 0.15 | 356 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.