Daily Sunspot Evaluation
Observation Sheet Monday, 21 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)
- 5
- Number of spots (f)
- 43
- Relative number (R)
- 93
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830321.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 26 | -11 | 33W | 305 | 33W | 8 | 64 |
| 2 | CKI – 10 | -7 | 11W | 283 | 11W | 10 | 65 |
| 3 | HSX – 1 | -11 | 02E | 270 | 02E | 0.5 | 67 |
| 4 | ARX – 5 | -13 | 11E | 261 | 11E | 2.75 | 69 |
| 5 | HSX – 1 | -13 | 40E | 232 | 40E | 1 | 68 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.