Daily Sunspot Evaluation
Observation Sheet Sunday, 17 May 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)
- 6
- Relative number (R)
- 46
- Observer
- YK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | -15 | 62W | 106 | 64W | 0.5 | 193 |
| 2 | AX – 2 | -19 | 39W | 83 | 41W | 1.5 | 194 |
| 3 | AX – 1 | -25 | 12E | 27 ⚠ | 15E | 0.5 | 197 |
| 4 | AX – 2 | -17 | 33E | 11 | 31E | 2 | 200 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.