Daily Sunspot Evaluation
Observation Sheet Thursday, 6 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)
- 9
- Number of spots (f)
- 71
- Relative number (R)
- 161
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890706.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 4 | 20 | 05E | 164 | 02E | 2° | 337 |
| 2 | AX – 1 | 12 | 05E | 164 | 02E | - | 336 |
| 3 | CSI – 13 | 23 | 25E | 144 | 22E | 7.5 | 329 |
| 4 | CAI – 23 | 8 | 31E | 138 | 28E | 10.5 | 329 |
| 5 | AR – 1 | 18 | 66E | 103 | 63E | 4 | 325 |
| 6 | ? – 2 | 24 | 75E | 94 | 72E | 9 | 325 |
| 7 | DAI – 16 | -19 | 02E | 167 | 01W | 4 | 325 |
| 8 | AX – 1 | -15 | 04E | 165 | 01E | - | 322 |
| 9 | CAI – 10 | -11 | 69E | 100 | 66E | 15 | 322 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.