Daily Sunspot Evaluation
Observation Sheet Saturday, 18 June 1983
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)
- 5
- Number of spots (f)
- 46
- Relative number (R)
- 96
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830618.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | DAI – 8 | 17 | 156 | |
| 2 | DKI – 10 | 13 | 158 | |
| 3 | HAX – 1 | -22 | 155 | |
| 4 | BBE – 9 | 0 | 157 | |
| 5 | DAE – 18 | -13 | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.