Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 September 2000
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)
- 5
- Number of spots (f)
- 136
- Relative number (R)
- 186
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20000919.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 5 | 50W | 195 | 53W | -1 | |
| 2 | DAC – 29 | 13 | 45W | 190 | 48W | 8 | |
| 3 | EKC – 23 | 14 | 54E | 91 | 51E | 14.5 | |
| 4 | FKC – 30 | 11 | 71E | 74 | 68E | 18 | |
| 5 | EKC – 52 | -13 | 21E | 124 | 18E | 10.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.