Daily Sunspot Evaluation
Observation Sheet Tuesday, 26 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)
- 7
- Number of spots (f)
- 18
- Relative number (R)
- 88
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510626.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 1 | 0.28 | 50 | |
| 2 | Z – 1 | 0.97 | 74 | |
| 3 | A – 2 | 0.68 | 109 | |
| 4 | A – 2 | 0.45 | 208 | |
| 5 | C – 3 | 0.54 | 216 | |
| 6 | C – 6 | 0.76 | 282 | |
| 7 | A – 3 | 0.39 | 349 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.