Daily Sunspot Evaluation
Observation Sheet Saturday, 15 February 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)
- 8
- Number of spots (f)
- 68
- Relative number (R)
- 148
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19920215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EHC – 20 | 12 | 42W | 219 | 44W | 13.5 | 57 |
| 2 | HA – 6 | 15 | 25W | 202 | 21W | 4 | 65 |
| 3 | BXI – 5 | 14 | 08W | 185 | 10W | 4 | 76 |
| 4 | BXI – 5 | -17 | 72W | 249 | 76W | 7 | 68 |
| 5 | AX – 2 | -9 | 15W | 192 | 17W | 1.5 | 77 |
| 6 | DKC – 24 | -13 | 03W | 180 | 05W | 9.5 | 64 |
| 7 | CRO – 3 | -8 | 23E | 154 | 21E | 4 | 73 |
| 8 | HR – 3 | -14 | 65E | 112 | 63E | 3.5 | 75 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.