Daily Sunspot Evaluation
Observation Sheet Sunday, 13 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)
- 8
- Number of spots (f)
- 73
- Relative number (R)
- 153
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560513.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 5 | 0.38 | 5 | |
| 2 | F – 26 | 0.61 | 8 | |
| 3 | H – 1 | 0.63 | 97 | |
| 4 | J – 2 | 0.31 | 186 | |
| 5 | C – 4 | 0.4 | 203 | |
| 6 | D – 22 | 0.49 | 224 | |
| 7 | E – 11 | 0.89 | 272 | |
| 8 | H – 2 | 0.84 | 279 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.