Daily Sunspot Evaluation
Observation Sheet Thursday, 10 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)
- 4
- Number of spots (f)
- 43
- Relative number (R)
- 83
- Observer
- MB
- Reading
- all checks consistent
- File
- 19920910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 5 | 11 | 09E | 302 | 06E | 4.5 | 322 |
| 2 | DRI – 33 | 15 | 51E | 260 | 48E | 7.5 | 320 |
| 3 | BXO – 4 | -11 | 15E | 296 | 12E | 5.5 | 321 |
| 4 | AX – 1 | -7 | 56E | 253 | 55E | - | 323 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.