Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 July 1990
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)
- 47
- Relative number (R)
- 147
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 18 | 85W | 47 | 85W | - | 280 |
| 2 | EAO – 8 | 21 | 62W | 24 | 62W | 14 | 286 |
| 3 | AX – 4 | 9 | 14W | 336 | 14W | 2 | 292 |
| 4 | AX – 1 | 15 | 00 | 322 | 00 | - | 298 |
| 5 | BRI – 16 | 7 | 03E | 319 | 03E | 6 | 299 |
| 6 | HA – 2 | 13 | 31E | 291 | 31E | 1.5 | 293 |
| 7 | BRI – 7 | -9 | 03E | 319 | 03E | 3 | 300 |
| 8 | HA – 6 | -16 | 13E | 309 | 13E | 2 | 289 |
| 9 | AX – 1 | -18 | 64E | 258 | 64E | - | 301 |
| 10 | AX – 1 | -9 | 65E | 257 | 65E | - | 302 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.