Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 16
- Number of spots (f)
- 135
- Relative number (R)
- 295
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19910612.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 5 | 7 | 74W | 286 | 77W | 3 | 266 |
| 2 | HS – 1 | 19 | 73W | 285 | 76W | 2.5 | 260 |
| 3 | AX – 1 | 9 | 59W | 271 | 62W | 267 | |
| 4 | AX – 2 | 16 | 49W | 261 | 52W | 1 | 268 |
| 5 | EKC – 55 | 32 | 33W | 245 | 36W | 14 | 291 |
| 6 | AR – 2 | 11 | 28W | 240 | 31W | 0.5 | 274 |
| 7 | BXO – 4 | -1 | 51W | 263 | 54W | 4 | 291 |
| 8 | EAC – 14 | -14 | 34W | 246 | 37W | 12 | 281 |
| 9 | CAI – 10 | -17 | 32W | 244 | 35W | 9 | 284 |
| 10 | HA – 6 | -19 | 21W | 233 | 24W | 2.5 | 277 |
| 11 | BRO – 8 | -15 | 05E | 207 | 02E | 9 | 286 |
| 12 | CAO – 15 | -22 | 06E | 206 | 03E | 8 | 282 |
| 13 | AX – 1 | -19 | 17E | 195 | 14E | 294 | |
| 14 | AX – 2 | -7 | 26E | 186 | 23E | 2 | 296 |
| 15 | BXI – 8 | -22 | 49E | 163 | 46E | 7 | 293 |
| 16 | AX – 1 | -16 | 72E | 140 | 69E | 297 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.