Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 June 1997
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)
- 2
- Number of spots (f)
- 12
- Relative number (R)
- 32
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19970618.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 7 | 18 | 29W | 29 | 32W | 7 | 37 |
| 2 | AX – 5 | -27 | 41E | 319 | 38E | 3 | 38 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.