Daily Sunspot Evaluation
Observation Sheet Friday, 18 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)
- 33
- Relative number (R)
- 83
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19920918.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAI – 21 | 13 | 58W | 262 | 60W | 11 | 320 |
| 2 | AX – 2 | 13 | 11E | 193 | 09E | 2.5 | 335 |
| 3 | HA – 1 | -19 | 18W | 222 | 20W | 1.5 | 324 |
| 4 | HS – 1 | -14 | 4PE | 164 | 38E | 2 | 330 |
| 5 | BXO – 8 | 8 | 42E | 162 | 40E | 5 | 331 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.