Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 69
- Relative number (R)
- 129
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19900927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 33 | 14 | 11W | 26 | 14W | 15 | 444 |
| 2 | BXI – 7 | -8 | 66W | 81 | 69W | 6.5 | 441 |
| 3 | HS – 1 | -26 | 38W | 53 | 41W | 2 | 442 |
| 4 | AX – 1 | -7 | 14W | 29 | 17W | - | 451 |
| 5 | EKI – 25 | -7 | 23E | 352 | 20E | 12 | 452 |
| 6 | HA – 2 | -12 | 33E | 342 | 30E | 1 | 450 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.