Daily Sunspot Evaluation
Observation Sheet Monday, 19 December 1955
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)
- 7
- Number of spots (f)
- 82
- Relative number (R)
- 152
- Observer
- KA
- Reading
- all checks consistent
- File
- 19551219.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 10 | 0.88 | 118 | |
| 2 | J – 2 | 0.82 | 123 | |
| 3 | H – 12 | 0.6 | 192 | |
| 4 | B – 14 | 0.66 | 242 | |
| 5 | E – 30 | 0.12 | 311 | |
| 6 | C – 8 | 0.53 | 326 | |
| 7 | A – 6 | 0.49 | 347 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.