Daily Sunspot Evaluation
Observation Sheet Tuesday, 10 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)
- 8
- Number of spots (f)
- 34
- Relative number (R)
- 114
- Observer
- YK
- Reading
- all checks consistent
- File
- 19900710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKI – 5 | 18 | 68W | 46 | 71W | 5 | 280 |
| 2 | AX – 2 | 10 | 48W | 26 | 51W | 1.5 | 296 |
| 3 | CAO – 13 | 21 | 44W | 22 | 47W | 12 | 286 |
| 4 | AX – 5 | 9 | 02E | 336 | 01W | 0.5 | 297 |
| 5 | HA – 2 | 12 | 48E | 290 | 45E | 1.5 | 283 |
| 6 | AX – 2 | -17 | 71W | 49 | 74W | 1 | 284 |
| 7 | BXO – 3 | -22 | 23E | 315 | 20E | 4 | 295 |
| 8 | HA – 2 | -16 | 29E | 309 | 26E | 2.5 | 289 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.