Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 7
- Number of spots (f)
- 23
- Relative number (R)
- 93
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 25 | 54W | 144 | 57W | 2 | 328 |
| 2 | BRO – 2 | 20 | 13W | 103 | 16W | 2 | 330 |
| 3 | HA – 1 | 21 | 64E | 26 | 61E | 2 | 343 |
| 4 | DKO – 5 | 27 | 67E | 23 | 64E | 10 | 344 |
| 5 | EAI – 9 | -10 | 11W | 101 | 14W | 12.5 | 347 |
| 6 | GSO – 2 | -13 | 07E | 83 | 04E | 5 | 349 |
| 7 | HH – 3 | -17 | 12E | 78 | 09E | 3.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.