Daily Sunspot Evaluation
Observation Sheet Friday, 5 October 1990
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)
- 103
- Relative number (R)
- 193
- Observer
- MB
- Reading
- all checks consistent
- File
- 19901005.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 33 | 13°E | 256 | 10°E | 1° | 456 |
| 2 | DAI – 20 | 19 | 18°E | 231 | 35°E | 1° | 457 |
| 3 | CAI – 21 | 12 | 40°E | 229 | 37°E | 13° | 459 |
| 4 | FKC – 31 | -5 | 47°W | 316 | 50°W | 10.5 | 453 |
| 5 | AR – 8 | -17 | 18°W | 287 | 21°W | 2° | 454 |
| 6 | DAI – 8 | -15 | 17°E | 252 | 14°E | 4° | 462 |
| 7 | DKO – 7 | -16 | 59°E | 210 | 56°E | 7° | 463 |
| 8 | ? – 1 | -23 | 73°E | 196 | 70°E | 1° | 464 |
| 9 | AX – 5 | 17 | 38°E | 231 | 35°E | 1° | 465 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.