Daily Sunspot Evaluation
Observation Sheet Monday, 14 September 1981
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)
- 13
- Number of spots (f)
- 90
- Relative number (R)
- 220
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19810914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 18 | 84W | 95 | 87W | - | |
| 2 | EKC – 21 | 8 | 55W | 66 | 59W | 12.5 | |
| 3 | HAX – 2 | 14 | 45W | 56 | 49W | 3 | |
| 4 | CAE – 11 | 9 | 44W | 55 | 49W | 6 | |
| 5 | EOKI – 23 | 16 | 27E | 344 | 23W | 6.5 | |
| 6 | DKI – 14 | 20 | 32E | 339 | 29E | 9 | |
| 7 | HAE – 1 | 11 | 80E | 291 | 76E | ? | |
| 8 | AXX – 4 | -9 | 12W | 23 | 16W | 1.8 | |
| 9 | CSO – 3 | -19 | 02E | 9 | 02W | 8 | |
| 10 | AXX – 1 | -17 | 12E | 359 | 08E | - | |
| 11 | ARX – 2 | -17 | 49E | 322 | 45E | 1 | |
| 12 | CAE – 3 | -4 | 60E | 311 | 56E | 6 | |
| 13 | AXX – 4 | -16 | 60E | 311 | 56E | 4.3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.