Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 August 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)
- 7
- Number of spots (f)
- 36
- Relative number (R)
- 106
- Observer
- TS
- Reading
- counts consistent, some coordinates doubtful
- File
- 19830817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 7 | 01W | 107 | 04W | 3 | 246 |
| 2 | HAX – 2 | 18 | 20E | 36 ⚠ | 17E | 125 | 249 |
| 3 | BRI – 5 | 20 | 27E | 79 | 24E | 6 | 252 |
| 4 | FAI – 17 | -6 | 52W | 158 | 55W | 16 | 244 |
| 5 | HAX – 2 | 0 | 51W | 157 | 54W | 2 | 243 |
| 6 | AXX – 3 | 106 | 03W | 1 ⚠ | 248 | ||
| 7 | BRI – 4 | -6 | 01E | 105 | 02W | 7 | 253 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.