Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 August 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)
- 68
- Relative number (R)
- 128
- Observer
- SB0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19980811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 13 | 20 | 28W | 256 | 20W | 7 | 168 |
| 2 | CKO – 7 | 30 | 28E | 208 ⚠ | 18E | 8 | 166 |
| 3 | FKO – 9 | 16 | 35E | 193 | 33E | 11.5 | 169 |
| 4 | FKC – 34 | -23 | 36W | 264 | 38W | 21.5 | 163 |
| 5 | CAO – 3 | -29 | 20W | 248 | 22W | 2.5 | 170 |
| 6 | ESO – 2 | -22 | 58E | 170 | 56E | 15 | 121 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.