Daily Sunspot Evaluation
Observation Sheet Thursday, 31 March 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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | -23 | 09W | 153 | 12W | 33 | |
| 2 | DSC – 5 | -18 | 17E | 127 | 14E | 4.5 | 34 |
| 3 | HRX – 1 | -24 | 21E | 123 | 13E | 0.5 | 35 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.