Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 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)
- 137
- Relative number (R)
- 237
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19820720.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 38 | 16 | 71W | 323 | 73W | 27 | 263 |
| 2 | EKC – 46 | 14 | 29W | 281 | 31W | 13 | 273 |
| 3 | EAI – 26 | 22 | 27W | 279 | 29W | 16.5 | 272 |
| 4 | HSX – 1 | 18 | 10E | 242 | 08E | 1.5 | 276 |
| 5 | CAO – 4 | 10 | 55E | 197 | 53E | 3.5 | 279 |
| 6 | ARX – 1 | -6 | 64W | 316 | 66W | 266 | |
| 7 | EKC – 16 | -11 | 51W | 303 | 53W | 17 | 269 |
| 8 | ARX – 3 | -20 | 31W | 283 | 33W | 1 | 274 |
| 9 | HAX – 1 | -4 | 30W | 282 | 32W | 17.5 | 270 |
| 10 | HAX – 1 | -22 | 19W | 271 | 21W | 0.5 | 277 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.