Daily Sunspot Evaluation
Observation Sheet Sunday, 8 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)
- 13
- Number of spots (f)
- 77
- Relative number (R)
- 207
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900708.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 10 | 109 | 75W | 80 | 78W | 10 | 276 |
| 2 | DKI – 20 | 18 | 41W | 46 | 44W | 6.5 | 278 |
| 3 | AX – 4 | 17 | 28W | 33 | 31W | 1.5 | 292 |
| 4 | ESO – 9 | 22 | 17W | 22 | 20W | 11 | 286 |
| 5 | HS – 2 | 12 | 74E | 291 | 71E | 2 | 293 |
| 6 | ? – 1 | -13 | 80W | 85 | 83W | - | 294 |
| 7 | AX – 1 | -26 | 71W | 76 | 74W | - | 291 |
| 8 | DKC – 11 | -14 | 68W | 73 | 71W | 10 | 281 |
| 9 | EAC – 11 | -22 | 67W | 72 | 70W | 14 | 277 |
| 10 | HA – 1 | -18 | 46W | 51 | 49W | 1 | 284 |
| 11 | AX – 1 | -12 | 02E | 3 | 01W | - | 294 |
| 12 | BXO – 5 | -23 | 51E | 314 | 48E | 4 | 295 |
| 13 | HS – 1 | -16 | 56E | 309 | 53E | 2 | 283 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.