Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 June 1991
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)
- 17
- Number of spots (f)
- 137
- Relative number (R)
- 307
- Observer
- YK
- Reading
- all checks consistent
- File
- 19910611.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 5 | 8 | 60W | 285 | 63W | 5.5 | 246 |
| 2 | HS – 1 | 19 | 60W | 285 | 63W | 2.5 | 260 |
| 3 | BXO – 3 | 17 | 35W | 260 | 38W | 3 | 288 |
| 4 | EKC – 48 | 32 | 19W | 244 | 22W | 13 | 291 |
| 5 | HA – 2 | 10 | 14W | 239 | 17W | 2 | 294 |
| 6 | BXI – 6 | 12 | 17E | 208 | 14E | 5.5 | 289 |
| 7 | AX – 2 | 13 | 27E | 198 | 24E | 290 | |
| 8 | AX – 2 | -1 | 34W | 259 | 37W | 0.5 | 291 |
| 9 | AX – 1 | -4 | 30W | 255 | 33W | 292 | |
| 10 | EAI – 18 | -13 | 20W | 245 | 23W | 11.5 | 281 |
| 11 | BRI – 14 | -17 | 18W | 243 | 21W | 7 | 284 |
| 12 | HA – 14 | -19 | 07W | 232 | 10W | 4 | 287 |
| 13 | CSI – 12 | -22 | 19E | 206 | 16E | 7.5 | 282 |
| 14 | AX – 3 | -15 | 22E | 203 | 19E | 0.5 | 296 |
| 15 | AX – 1 | -11 | 24E | 201 | 21E | 293 | |
| 16 | AX – 1 | -19 | 30E | 195 | 27E | 0.5 | 294 |
| 17 | BXO – 4 | -22 | 63E | 162 | 60E | 7 | 295 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.