Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 7
- Number of spots (f)
- 70
- Relative number (R)
- 140
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19980812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 16 | 20 | 42W | 257 | 45W | 6.5 | 168 |
| 2 | DKI – 10 | 31 | 07E | 208 | 04E | 7 | 169 |
| 3 | CKI – 15 | 15 | 23E | 192 | 20E | 12.5 | 169 |
| 4 | FAC – 23 | -23 | 50W | 265 | 53W | 19 | 161 |
| 5 | AX – 1 | -27 | 34W | 249 | 37W | - | 170 |
| 6 | CAO – 3 | -14 | 41E | 174 | 38E | 2 | 172 |
| 7 | ESO – 2 | -22 | 46E | 169 | 48E | 13 | 171 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.