Daily Sunspot Evaluation
Observation Sheet Sunday, 3 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)
- 7
- Number of spots (f)
- 23
- Relative number (R)
- 93
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19830403.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | -12 | 42W | 147 | 46W | 0.5 | 78 |
| 2 | ARX – 3 | -6 | 42W | 146 | 45W | 1.5 | 79 |
| 3 | AXX – 1 | -14 | 39W | 143 | 42W | 80 | |
| 4 | RAI – 12 | -17 | 23W | 127 | 26W | 5 | 74 |
| 5 | AXX – 3 | -20 | 17W | 121 | 20W | 1 | 75 |
| 6 | AXX – 2 | -11 | 12W | 121 ⚠ | 20W | 2 | 81 |
| 7 | ARX – 1 | -12 | 72E | 32 | 69E | 0.75 | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.