Daily Sunspot Evaluation
Observation Sheet Sunday, 18 October 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)
- 7
- Number of spots (f)
- 50
- Relative number (R)
- 120
- Observer
- MB
- Reading
- all checks consistent
- File
- 19921018.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 8 | 74W | 239 | 73W | - | 370 |
| 2 | BXO – 5 | 7 | 10W | 178 | 12W | 4.5 | 357 |
| 3 | CAI – 11 | 5 | 41E | 127 | 39E | 8 | 367 |
| 4 | HS – 1 | 15 | 58E | 110 | 56E | 2 | 365 |
| 5 | DAI – 23 | -19 | 01E | 167 | 01W | 9.5 | 356 |
| 6 | BXO – 4 | -6 | 33E | 135 | 31E | 5 | 365 |
| 7 | ? – 5 | -12 | 77E | 91 | 75E | 1 | 368 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.