Daily Sunspot Evaluation
Observation Sheet Sunday, 27 October 1991
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)
- 10
- Number of spots (f)
- 175
- Relative number (R)
- 275
- Observer
- YK
- Reading
- all checks consistent
- File
- 19911027.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 10 | 9 | 43W | 244 | 46W | 7 | 591 |
| 2 | AX – 6 | 23 | 34W | 235 | 37W | 4 | 596 |
| 3 | AX – 1 | 21 | 00 | 201 | 03W | - | 589 |
| 4 | AX – 1 | 22 | 07E | 194 | 04E | - | 600 |
| 5 | FAI – 32 | 18 | 41E | 160 | 38E | 16 | 585 |
| 6 | AX – 1 | -18 | 10W | 211 | 13W | - | 603 |
| 7 | FKC – 86 | -12 | 18E | 183 | 15E | 16 | 593 |
| 8 | EAC – 34 | -20 | 18E | 183 | 15E | 15 | 586 |
| 9 | HA – 1 | -8 | 31E | 170 | 28E | 1 | 597 |
| 10 | AX – 3 | -2 | 60E | 141 | 57E | 1 | 602 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.