Daily Sunspot Evaluation
Observation Sheet Sunday, 17 March 1985
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)
- 1
- Number of spots (f)
- 8
- Relative number (R)
- 18
- Observer
- HG
- Reading
- all checks consistent
- File
- 19850317.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 8 | -13 | 40E | 359 | 38E | 5 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.