Daily Sunspot Evaluation
Observation Sheet Tuesday, 15 February 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)
- 3
- Number of spots (f)
- 3
- Relative number (R)
- 33
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | 15 | 34W | 37 | 37W | 0.5 | 46 |
| 2 | AXX – 1 | 2 | 03W | 6 | 06W | 45 | |
| 3 | AXX – 1 | -19 | 60E | 303 | 57E | 47 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.