Daily Sunspot Evaluation
Observation Sheet Thursday, 21 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)
- 7
- Number of spots (f)
- 56
- Relative number (R)
- 126
- Observer
- NA
- Reading
- all checks consistent
- File
- 19920521.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 30 | 22 | 24E | 328 | 21E | 12 | 201 |
| 2 | HA – 3 | 14 | 66E | 286 | 63E | 2 | 207 |
| 3 | BXI – 8 | -7 | 54W | 46 | 57W | 5 | 213 |
| 4 | AX – 2 | -13 | 30W | 22 | 33W | - | 209 |
| 5 | AX – 2 | -19 | 14W | 6 | 17W | 9.5 | 212 |
| 6 | DAO – 9 | -22 | 10W | 2 | 13W | 4.5 | 211 |
| 7 | ? – 2 | -4 | 75E | 277 | 72E | - | 210 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.