Daily Sunspot Evaluation
Observation Sheet Friday, 4 September 1998
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)
- 4
- Number of spots (f)
- 61
- Relative number (R)
- 101
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19980904.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 55 | -22 | 01W | 272 | 04W | 16 | 192 |
| 2 | HA – 1 | 30 | 74E | 197 | 71E | 2 | 203 202 |
| 3 | HA – 2 | 21 | 68E | 203 | 65E | 2 | 203 201 |
| 4 | CSO – 3 | 16 | 76E | 195 | 73E | 10 | 203 200 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.