Daily Sunspot Evaluation
Observation Sheet Monday, 16 April 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)
- 115
- Relative number (R)
- 265
- Observer
- KA
- Reading
- all checks consistent
- File
- 19560416.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 8 | 0.48 | 10 | |
| 2 | A – 3 | 0.6 | 11 | |
| 3 | A – 1 | 0.54 | 14 | |
| 4 | A – 1 | 0.51 | 101 | |
| 5 | A – 4 | 0.62 | 120 | |
| 6 | A – 5 | 0.54 | 128 | |
| 7 | E – 26 | 0.43 | 144 | |
| 8 | F – 39 | 0.29 | 181 | |
| 9 | H – 1 | 0.52 | 212 | |
| 10 | J – 1 | 0.96 | 272 | |
| 11 | J – 1 | 0.59 | 291 | |
| 12 | B – 9 | 0.74 | 299 | |
| 13 | J – 2 | 0.33 | 307 | |
| 14 | A – 7 | 0.36 | 324 | |
| 15 | A – 7 | 0.39 | 347 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.