Daily Sunspot Evaluation
Observation Sheet Friday, 3 September 1999
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)
- 6
- Number of spots (f)
- 32
- Relative number (R)
- 92
- Observer
- YK
- Reading
- all checks consistent
- File
- 19990903.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 20 | 63W | 210 | 66W | 7.5 | |
| 2 | HA – 6 | 19 | 45W | 192 | 48W | 3.5 | |
| 3 | CRO – 6 | 10 | 10W | 157 | 13W | 4.5 | |
| 4 | CRO – 2 | 18 | 10E | 137 | 09E | 6.5 | |
| 5 | BXI – 8 | -25 | 25E | 122 | 28E | 6 | |
| 6 | BXO – 6 | -24 | 23E | 124 | 20E | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.