Daily Sunspot Evaluation
Observation Sheet Tuesday, 30 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)
- 16
- Number of spots (f)
- 65
- Relative number (R)
- 225
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19801230.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 18 | 67W | 244 | 69W | 1.5 | |
| 2 | DAC – 14 | 15 | 18W | 195 | 20W | 10 | |
| 3 | HSX – 1 | 26 | 14W | 191 | 16W | 1 | |
| 4 | HAX – 4 | 23 | 06W | 183 | 08W | 2.75 | |
| 5 | AXX – 1 | 26 | 00 | 177 | 02W | - | |
| 6 | HSX – 1 | 25 | 08E | 169 | 06E | 1.75 | |
| 7 | HAX – 1 | 11 | 54E | 123 | 52E | 2 | |
| 8 | HSX – 1 | 12 | 66E | 111 | 64E | 1 | |
| 9 | DKO – 6 | -24 | 23W | 200 | 23W | 7 | |
| 10 | DKC – 15 | -7 | 07W | 184 | 09W | 8 | |
| 11 | HAX – 2 | -29 | 05W | 182 | 07W | 2.2 | |
| 12 | AXX – 1 | -14 | 01W | 178 | 03W | - | |
| 13 | CAE – 10 | -9 | 00 | 177 | 02W | 3.5 | |
| 14 | AXX – 2 | -10 | 07E | 170 | 05E | 2 | |
| 15 | ARX – 1 | -7 | 21E | 156 | 19E | - | |
| 16 | ARX – 4 | -9 | 27E | 150 | 25E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.