Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 July 1989
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)
- 63
- Relative number (R)
- 163
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19890704.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 4 | 19 | 77W | 269 | 77W | 6 | 730 |
| 2 | AX – 2 | 12 | 18E | 174 | 18E | - | 730 |
| 3 | AR – 1 | 11 | 28E | 164 | 28E | 0.5 | 730 |
| 4 | AX – 1 | 16 | 33E | 159 | 33E | - | 730 |
| 5 | CAI – 14 | 24 | 46E | 146 | 46E | 9 | 730 |
| 6 | DAI – 20 | 8 | 52E | 140 | 52E | 10 | 730 |
| 7 | ? – 2 | -18 | 85W | 277 | 85W | - | 730 |
| 8 | DKO – 12 | -19 | 23E | 169 | 23E | 6.5 | 730 |
| 9 | BAI – 6 | -16 | 28E | 164 | 28E | 6 | 730 |
| 10 | ? – 1 | -10 | 85E | 107 | 85E | - | 730 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.