Daily Sunspot Evaluation
Observation Sheet Wednesday, 6 May 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)
- 14
- Number of spots (f)
- 110
- Relative number (R)
- 250
- Observer
- OG
- Reading
- all checks consistent
- File
- 19810506.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 4 | 82W | 24 | 84W | 5 | |
| 2 | HAX – 1 | 20 | 38W | 340 | 40W | 3 | |
| 3 | EKC – 43 | 6 | 15W | 317 | 17W | 12 | |
| 4 | DKC – 14 | 15 | 12W | 314 | 14W | 9.5 | |
| 5 | BXO – 6 | 18 | 01W | 303 | 03W | 4 | |
| 6 | CRO – 4 | 16 | 12E | 290 | 10E | 4 | |
| 7 | HSX – 1 | 10 | 13E | 289 | 11E | 1 | |
| 8 | GSO – 2 | 13 | 67E | 235 | 65E | 5 | |
| 9 | HKI – 9 | 9 | 74E | 228 | 72E | 12 | |
| 10 | CSO – 7 | -7 | 33W | 335 | 35W | 6 | |
| 11 | BXO – 8 | -18 | 18E | 284 | 16E | 3 | |
| 12 | HSX – 1 | -8 | 28E | 274 | 26E | 0.5 | |
| 13 | DAI – 10 | -21 | 33E | 269 | 31E | 10 | |
| 14 | BXO – 3 | -5 | 72E | 230 | 70E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.