Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 April 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)
- 9
- Number of spots (f)
- 46
- Relative number (R)
- 136
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20000419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 11 | 74W | 82 | 74W | 2 | |
| 2 | CAO – 3 | 17 | 32W | 37 | 32W | 2 | |
| 3 | CSO – 3 | 33 | 11W | 16 | 11W | 2.5 | |
| 4 | HK – 18 | 19 | 01E | 4 | 01E | 0.5 | |
| 5 | HS – 1 | 22 | 05E | 0 | 05E | 1.5 | |
| 6 | DAO – 4 | 20 | 68E | 297 | 68E | 9 | |
| 7 | EKO – 12 | -22 | 25W | 30 | 25W | 4.5 | |
| 8 | HR – 1 | -11 | 33E | 332 | 33E | 0.05 | |
| 9 | HA – 2 | -13 | 59E | 306 | 59E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.