Daily Sunspot Evaluation
Observation Sheet Friday, 16 May 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)
- 4
- Relative number (R)
- 24
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19970516.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 21 | 65W | 139 | 65W | 1 | 25 |
| 2 | HR – 2 | 5 | 62E | 12 | 62E | 3 | 22 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.