Daily Sunspot Evaluation
Observation Sheet Thursday, 11 August 1988
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)
- 9
- Number of spots (f)
- 121
- Relative number (R)
- 211
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19880811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 29 | 22 | 14W | 205 | 17W | 11 | 165 |
| 2 | BRO – 7 | 28 | 12W | 203 | 15W | 5.5 | 166 |
| 3 | BRO – 7 | 31 | 4W | 195 | 7W | 5 | 167 |
| 4 | EKC – 27 | 16 | 30E | 161 | 27E | 12 | 170 |
| 5 | DKC – 21 | 23 | 34E | 157 | 31E | 8 | 171 |
| 6 | EKC – 18 | -15 | 70W | 261 | 73W | 12.5 | 168 |
| 7 | HA – 6 | -19 | 17E | 174 | 14E | 4 | 169 |
| 8 | DKO – 4 | -22 | 42E | 149 | 39E | 8 | 173 |
| 9 | BRO – 2 | -19 | 47E | 144 | 44E | 3.5 | 174 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.