Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 5
- Number of spots (f)
- 29
- Relative number (R)
- 79
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 6 | -17 | 59W | 167 | 62W | 8 | 39 |
| 2 | BXO – 3 | -7 | 20W | 128 | 23W | 5 | 41 |
| 3 | DKC – 18 | -18 | 15W | 123 | 18W | 125 | 42 |
| 4 | ARX – 1 | -9 | 03W | 111 | 06W | 43 | |
| 5 | AXX – 1 | -12 | 05W | 113 | 08W | 44 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.