Daily Sunspot Evaluation
Observation Sheet Saturday, 23 April 1983
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)
- 36
- Relative number (R)
- 96
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRI – 6 | 8 | 38W | 238 | 4W | 5 | 100 |
| 2 | CAI – 9 | 11 | 20W | 220 | 23W | 9 | 96 |
| 3 | BXO – 2 | -8 | 54W | 254 | 57W | 35 | 101 |
| 4 | CKO – 13 | -12 | 26E | 174 | 23E | 8.5 | 99 |
| 5 | DKO – 4 | -13 | 65E | 135 | 62E | 7 | 102 |
| 6 | DAO – 2 | -17 | 73E | 127 | 70E | 6 | 163 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.