Daily Sunspot Evaluation
Observation Sheet Saturday, 16 August 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)
- 3
- Relative number (R)
- 23
- Observer
- TA
- Reading
- all checks consistent
- File
- 19970816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 14 | 19E | 281 | 16E | 1.5 | 59 |
| 2 | HR – 1 | 26 | 22E | 278 | 19E | 1 | 60 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.