Daily Sunspot Evaluation
Observation Sheet Thursday, 9 October 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)
- 12
- Number of spots (f)
- 191
- Relative number (R)
- 311
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19801009.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 14 | 74W | 251 | 76W | 8.5 | |
| 2 | DAI – 52 | 12 | 18E | 159 | 16E | 11 | |
| 3 | EKC – 47 | 14 | 32E | 145 | 30E | 14.5 | |
| 4 | ? – 1 | 17 | 83E | 94 | 81E | ||
| 5 | CAI – 23 | -8 | 14W | 193 | 18W | 7.5 | |
| 6 | HSK – 1 | -26 | 15W | 172 ⚠ | 17W | 1 | |
| 7 | CSO – 4 | -17 | 09W | 186 | 11W | 3.75 | |
| 8 | BXI – 7 | -23 | 13E | 164 | 11E | 4.5 | |
| 9 | HAX – 1 | -30 | 31E | 146 | 29E | 2 | |
| 10 | ARK – 1 | -10 | 42E | 135 | 40E | ||
| 11 | EKC – 47 | -9 | 59E | 118 | 57E | 15 | |
| 12 | HAX – 2 | -21 | 76E | 101 | 74E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.