Daily Sunspot Evaluation
Observation Sheet Monday, 21 December 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)
- 48
- Relative number (R)
- 118
- Observer
- HE
- Reading
- all checks consistent
- File
- 19921221.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 10 | 15 | 60W | 105 | 63W | 8 | 441 |
| 2 | BXI – 3 | 16 | 56E | 349 | 53E | 6 | 437 |
| 3 | HA – 2 | 12 | 63E | 342 | 60E | 2.5 | 433 |
| 4 | ? – 2 | -11 | 78W | 123 | 81W | - | 442 |
| 5 | HS – 1 | -9 | 03W | 48 | 06W | 1 | 433 |
| 6 | HA – 3 | -13 | 27E | 18 | 24E | 1.5 | 440 |
| 7 | DKI – 27 | -9 | 45E | 0 | 42E | 8 | 439 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.