Daily Sunspot Evaluation
Observation Sheet Thursday, 15 November 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)
- 7
- Number of spots (f)
- 67
- Relative number (R)
- 137
- Observer
- TA
- Reading
- all checks consistent
- File
- 19901115.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 5 | 17 | 60W | 148 | 63W | 4° | 517 |
| 2 | DAO – 8 | 7 | 43W | 131 | 46W | 7° | 524 |
| 3 | AX – 3 | 11 | 27W | 115 | 30W | 1° | 525 |
| 4 | FKI – 24 | 19 | 62E | 26 | 59E | 25° | 530 |
| 5 | AR – 1 | -18 | 48W | 136 | 51W | — | 533 |
| 6 | CKO – 11 | -31 | 37W | 125 | 40W | 13° | 528 |
| 7 | DAC – 15 | -21 | 13W | 101 | 16W | 6° | E1, E2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.