Daily Sunspot Evaluation
Observation Sheet Friday, 13 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)
- 7
- Relative number (R)
- 27
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19970613.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 28 | 00 | 66 | 03W | 0.5 | 36 |
| 2 | DRO – 6 | 17 | 37E | 29 | 34E | 3 | 37 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.