Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 November 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)
- 9
- Number of spots (f)
- 47
- Relative number (R)
- 137
- Observer
- HM
- Reading
- all checks consistent
- File
- 19811118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 1 | 19 | 52W | 282 | 52W | 3 | |
| 2 | BXO – 4 | 12 | 30E | 200 | 30E | 3.5 | |
| 3 | DAO – 6 | -15 | 72W | 302 | 72W | 9 | |
| 4 | AXX – 1 | -22 | 67W | 297 | 67W | - | |
| 5 | DAI – 18 | -16 | 29W | 259 | 29W | 7 | |
| 6 | AXX – 1 | -3 | 15W | 245 | 15W | - | |
| 7 | CAE – 14 | -5 | 05E | 225 | 05E | 8 | |
| 8 | AXX – 1 | -6 | 14E | 216 | 14E | - | |
| 9 | AXX – 1 | -8 | 20E | 210 | 20E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.