Daily Sunspot Evaluation
Observation Sheet Saturday, 12 May 1956
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)
- 81
- Relative number (R)
- 181
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560512.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.46 | 19 | |
| 2 | E – 22 | 0.71 | 20 | |
| 3 | H – 4 | 0.78 | 91 | |
| 4 | J – 1 | 0.3 | 146 | |
| 5 | J – 3 | 0.28 | 174 | |
| 6 | D – 23 | 0.32 | 210 | |
| 7 | ? – 1 | 0.99 | 230 | |
| 8 | ? – 4 | 0.99 | 265 | |
| 9 | E – 19 | 0.79 | 275 | |
| 10 | H – 3 | 0.73 | 286 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.