Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 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)
- 6
- Number of spots (f)
- 21
- Relative number (R)
- 81
- Observer
- YK
- Reading
- all checks consistent
- File
- 19980916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 9 | 29 | 40W | 152 | 42W | 11 | 204 203 |
| 2 | ? – 1 | -17 | 80W | 192 | 82W | 205 204 | |
| 3 | AX – 2 | -23 | 44W | 156 | 46W | 1 | 206 205 |
| 4 | DAO – 6 | -22 | 22E | 90 | 20E | 9.5 | 210 208 |
| 5 | AX – 1 | -40 | 48E | 64 | 46E | 212 211 | |
| 6 | CRO – 2 | -29 | 62E | 50 | 60E | 5 | 213 212 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.