Daily Sunspot Evaluation
Observation Sheet Thursday, 25 December 1980
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)
- 14
- Number of spots (f)
- 66
- Relative number (R)
- 206
- Observer
- OG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19801225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | 5 | 41W | 282 | 41W | 0.5 | |
| 2 | DKO – 11 | 4 | 27W | 268 | 28W | 9.5 | |
| 3 | DKC – 5 | 18 | 00 | 241 | 01W | 4 | |
| 4 | DAO – 11 | 30 | 23E | 218 | 22E | 7 | |
| 5 | HAX – 2 | 26 | 50E | 191 | 49E | 3 | |
| 6 | HAX – 1 | 26 | 73E | 168 | 72E | 2 | |
| 7 | HAX – 1 | -17 | 34W | 295 ⚠ | 35W | 2.5 | |
| 8 | BXI – 3 | -18 | 33W | 274 | 34W | 4 | |
| 9 | CJI – 6 | -5 | 28W | 269 | 29W | 2 | |
| 10 | HSX – 1 | -21 | 09W | 250 | 10W | 2 | |
| 11 | HIX – 1 | -15 | 29E | 212 | 28E | 1 | |
| 12 | HKX – 4 | -23 | 42E | 193 ⚠ | 41E | 4.5 | |
| 13 | HKA – 2 | -28 | 58E | 183 | 57E | 4 | |
| 14 | DKO – 16 | -7 | 62E | 177 | 61E | 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.