Daily Sunspot Evaluation
Observation Sheet Friday, 11 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)
- 15
- Number of spots (f)
- 60
- Relative number (R)
- 210
- Observer
- FY
- Reading
- all checks consistent
- File
- 19560511.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 6 | 0.81 | 27 | |
| 2 | A – 2 | 0.62 | 34 | |
| 3 | J – 1 | 0.89 | 89 | |
| 4 | A – 2 | 0.78 | 102 | |
| 5 | J – 2 | 0.41 | 115 | |
| 6 | B – 2 | 0.6 | 119 | |
| 7 | J – 1 | 0.3 | 132 | |
| 8 | D – 8 | 0.19 | 170 | |
| 9 | J – 1 | 0.94 | 230 | |
| 10 | A – 3 | 0.85 | 268 | |
| 11 | G – 3 | 0.92 | 268 | |
| 12 | A – 1 | 0.79 | 274 | |
| 13 | A – 3 | 0.86 | 278 | |
| 14 | E – 23 | 0.66 | 282 | |
| 15 | J – 2 | 0.62 | 297 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.