Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 September 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)
- 6
- Number of spots (f)
- 45
- Relative number (R)
- 105
- Observer
- TA
- Reading
- all checks consistent
- File
- 19900926.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 16 | 13 | 03°E | 25 | 01°W | 14° | u44 |
| 2 | DAI – 3 | -13 | 75°W | 103 | 79°W | 5° | u34 |
| 3 | AX – 7 | -8 | 52°W | 80 | 56°W | 4° | u01 |
| 4 | HS – 1 | -24 | 24°W | 52 | 28°W | 2° | u02 |
| 5 | EKC – 17 | -7 | 35°E | 353 | 31°E | 11.5 | E2, E3 |
| 6 | HA – 1 | -12 | 46°E | 342 | 42°E | 1° | u50 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.