Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 June 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)
- 28
- Relative number (R)
- 78
- Observer
- YK
- Reading
- all checks consistent
- File
- 19980617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 9 | 34 | 13W | 249 | 15W | 6.50 | 10^6 43 |
| 2 | HS – 8 | 18 | 23E | 213 | 21E | 3.50 | 10^5 38 |
| 3 | AX – 6 | -26 | 13E | 223 | 11E | 2 | 10^5 44 |
| 4 | HS – 1 | -28 | 60E | 176 | 58E | 1.5 | 11^2 30 |
| 5 | AX – 4 | -21 | 01W | 237 | 03W | 1.5 | 10^5 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.