Daily Sunspot Evaluation
Observation Sheet Saturday, 16 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)
- 4
- Number of spots (f)
- 6
- Relative number (R)
- 46
- Observer
- SM
- Reading
- all checks consistent
- File
- 19830416.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 5 | 58E | 234 | 56E | 2 | 31 |
| 2 | HAX – 1 | -16 | 69W | 361 | 71W | 1 | 84 |
| 3 | AXX – 1 | -8 | 02W | 294 | 04W | 0.5 | 89 |
| 4 | BRO – 3 | -7 | 03E | 289 | 01E | 3.5 | 88 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.