Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 May 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)
- 9
- Number of spots (f)
- 66
- Relative number (R)
- 156
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510522.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 2 | 0.52 | 25 | |
| 2 | J – 1 | 0.5 | 80 | |
| 3 | J – 1 | 0.95 | 92 | |
| 4 | D – 24 | 0.22 | 160 | |
| 5 | J – 3 | 0.29 | 199 | |
| 6 | A – 2 | 0.81 | 265 | |
| 7 | ? – 5 | 0.98 | 266 | |
| 8 | E – 18 | 0.4 | 330 | |
| 9 | D – 10 | 0.33 | 356 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.