Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 July 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)
- 5
- Number of spots (f)
- 19
- Relative number (R)
- 69
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19980715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 3 | 19 | 13E | 212 | 10E | 3.5 | 135 |
| 2 | DAO – 10 | -21 | 10E | 215 | 07E | 9 | 138 |
| 3 | AR – 2 | -9 | 11E | 214 | 08E | 2 | 140 |
| 4 | AX – 2 | -27 | 30E | 195 | 27E | 2 | 144 |
| 5 | ? – 2 | -29 | 68E | 157 | 65E | 4 | 148 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.