Daily Sunspot Evaluation
Observation Sheet Friday, 17 September 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)
- 9
- Number of spots (f)
- 75
- Relative number (R)
- 165
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19820917.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 13 | 17 | 23W | 216 | 26W | 7 | 357 |
| 2 | DAO – 11 | 1 | 13E | 180 | 10E | 5.5 | 355 |
| 3 | DAO – 11 | 19 | 44E | 149 | 41E | 7 | 353 |
| 4 | DAC – 9 | 14 | 57E | 136 | 54E | 5 | 356 |
| 5 | HKX – 1 | -10 | 76W | 269 | 79W | 4 | 344 |
| 6 | HAX – 2 | -22 | 69W | 262 | 72W | 2.5 | 351 |
| 7 | HSX – 2 | -13 | 21W | 214 | 24W | 0.5 | 349 |
| 8 | CAI – 16 | -15 | 12E | 181 | 09E | 5.5 | 352 |
| 9 | HKI – 10 | -11 | 37E | 156 | 34E | 6.5 | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.