Daily Sunspot Evaluation
Observation Sheet Monday, 18 June 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)
- 89
- Relative number (R)
- 169
- Observer
- KA
- Reading
- all checks consistent
- File
- 19560618.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | F – 16 | 0.45 | 32 | |
| 2 | E – 33 | 0.69 | 112 | |
| 3 | D – 10 | 0.49 | 120 | |
| 4 | J – 1 | 0.47 | 154 | |
| 5 | B – 3 | 0.64 | 284 | |
| 6 | C – 10 | 0.48 | 308 | |
| 7 | J – 1 | 0.47 | 320 | |
| 8 | D – 15 | 0.55 | 331 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.