Daily Sunspot Evaluation
Observation Sheet Saturday, 19 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)
- 8
- Relative number (R)
- 38
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 6 | -17 | 05E | 303 | 04E | 3 | 47 |
| 2 | HSX – 1 | -13 | 42E | 266 | 41E | 1.25 | 48 |
| 3 | HSX – 1 | -9 | 60E | 248 | 55E | 2.25 | 49 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.