Daily Sunspot Evaluation
Observation Sheet Monday, 27 September 1999
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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19990927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 3 | 19 | 18W | 208 | 21W | 2 | |
| 2 | HA – 2 | 20 | 78E | 112 | 75E | 4 | |
| 3 | HS – 2 | -20 | 58W | 248 | 61W | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.