Daily Sunspot Evaluation
Observation Sheet Wednesday, 21 July 1982
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)
- 10
- Number of spots (f)
- 82
- Relative number (R)
- 182
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19820721.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 9 | 16 | 79W | 319 | 82W | 17 | 263 |
| 2 | DAC – 15 | 14 | 43W | 283 | 46W | 11 | 273 |
| 3 | EAI – 32 | 21 | 40W | 280 | 43W | 17.5 | 272 |
| 4 | DAO – 4 | 15 | 24W | 264 | 27W | 5 | 261 |
| 5 | CAI – 4 | 18 | 00 | 240 | 03W | 4 | 276 |
| 6 | AXX – 2 | 10 | 42E | 198 | 39E | - | 279 |
| 7 | EKC – 12 | -11 | 63W | 303 | 66W | 17 | 269 |
| 8 | HSX – 1 | -5 | 42W | 282 | 45W | 1 | 270 |
| 9 | ARX – 2 | -23 | 31W | 271 | 34W | 0.5 | 277 |
| 10 | ARX – 1 | -20 | 68E | 172 | 65E | 1 | 280 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.