Daily Sunspot Evaluation
Observation Sheet Saturday, 30 July 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)
- 6
- Number of spots (f)
- 31
- Relative number (R)
- 91
- Observer
- TS
- Reading
- all checks consistent
- File
- 19830730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 3 | 23 | +23W | 7 | 27W | 3 | 223 |
| 2 | BRI – 9 | -14 | 41W | 25 | 45W | 5 | 220 |
| 3 | HAX – 1 | -7 | 20E | 324 | 16E | 0.75 | 224 |
| 4 | EKC – 16 | -11 | 52E | 292 | 48E | 16 | 219 |
| 5 | AXX – 1 | -20 | 56E | 288 | 52E | - | 225 |
| 6 | HAX – 1 | -23 | 61E | 283 | 57E | 2 | 222 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.