Daily Sunspot Evaluation
Observation Sheet Sunday, 13 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)
- 45
- Relative number (R)
- 105
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19920913.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 6 | 12 | 51W | 321 | 53W | 6 | 328 |
| 2 | CAI – 18 | 16 | 11E | 259 | 09E | 4.5 | 320 |
| 3 | AX – 6 | 11 | 16E | 254 | 14E | 2 | 322 |
| 4 | DAI – 12 | -18 | 23W | 293 | 25W | 7 | 321 |
| 5 | HA – 2 | -14 | 49E | 221 | 47E | 3 | 324 |
| 6 | HR – 1 | -15 | 61E | 209 | 59E | 0.5 | 325 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.