Daily Sunspot Evaluation
Observation Sheet Tuesday, 15 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)
- 9
- Number of spots (f)
- 42
- Relative number (R)
- 132
- Observer
- TA
- Reading
- all checks consistent
- File
- 19921215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 8 | 16W | 139 | 18W | 1 | 428 |
| 2 | CKC – 10 | -5 | 55W | 178 | 57W | 11 | 429 |
| 3 | CAO – 11 | -17 | 43W | 166 | 45W | 10 | 423 |
| 4 | HA – 3 | -20 | 36W | 159 | 38W | 1 | 474 |
| 5 | CSO – 5 | -7 | 11W | 134 | 13W | 6.5 | 427 |
| 6 | CAO – 4 | -12 | 11E | 112 | 09E | 5.5 | 432 |
| 7 | CAO – 6 | -34 | 29E | 94 | 27E | 5 | 435 |
| 8 | AX – 1 | -7 | 63E | 60 | 61E | - | 434 |
| 9 | S – 1 | -9 | 75E | 48 | 73E | - | 433 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.