Daily Sunspot Evaluation
Observation Sheet Saturday, 12 September 1992
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)
- 5
- Number of spots (f)
- 36
- Relative number (R)
- 86
- Observer
- MB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920912.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 26 | 16 | 28E | 260 ⚠ | 21E | 9 | 320 |
| 2 | AX – 1 | 9 | 60E | 213 ⚠ | 58E | - | 316 |
| 3 | BXI – 5 | -18 | 10W | 293 | 12W | 9 | 321 |
| 4 | HA – 2 | -13 | 62E | 221 | 60E | 2 | 324 |
| 5 | AX – 2 | 15 | 74E | 209 | 72E | 1 | 325 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.