Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 9
- Number of spots (f)
- 46
- Relative number (R)
- 136
- Observer
- TS
- Reading
- all checks consistent
- File
- 19830719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 20 | 30W | 159 | 33W | 1.5 | 199 |
| 2 | HAX – 6 | 13 | 02E | 127 | 01W | 3 | 197 |
| 3 | HRX – 1 | 16 | 20E | 109 | 17E | 0.75 | 201 |
| 4 | AXX – 3 | 10 | 47E | 82 | 44E | 1 | 207 |
| 5 | AXX – 1 | -7 | 42W | 171 | 45W | - | 208 |
| 6 | AXX – 1 | -10 | 38W | 167 | 41W | - | 204 |
| 7 | BXI – 19 | -10 | 14W | 143 | 17W | 6 | 206 |
| 8 | BXI – 11 | -5 | 05W | 134 | 08W | 7 | 205 |
| 9 | AXX – 3 | -10 | 47E | 82 | 44E | 1 | 209 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.