Daily Sunspot Evaluation
Observation Sheet Monday, 21 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)
- 6
- Number of spots (f)
- 23
- Relative number (R)
- 83
- Observer
- SG0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920921.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 8 | 030 | 1620 | 06W | 4 | 358 |
| 2 | AX – 1 | 18 | 00 | 165 | 03W | - | 360 |
| 3 | CRO – 4 | -8 | 00 | 165 | 03W | 7 | 331 |
| 4 | HS – 1 | -14 | 00 | 165 | 03W | 2 | 350 |
| 5 | DAI – 11 | 16 | 15E | 130 ⚠ | 12E | 5 | 359 |
| 6 | HA – 2 | 10 | 64E | 101 ⚠ | 61E | 4 | 337 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.