Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 12
- Number of spots (f)
- 71
- Relative number (R)
- 191
- Observer
- TA
- Reading
- all checks consistent
- File
- 19910627.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 7 | 83W | 96 | 86W | 3 | 302 |
| 2 | ? – 1 | 14 | 78W | 91 | 81W | 1 | 313 |
| 3 | AR – 4 | 23 | 36W | 49 | 39W | 2 | 310 |
| 4 | DKO – 29 | 5 | 19E | 354 | 16E | 9.5 | 324 |
| 5 | HS – 3 | 3 | 42E | 331 | 39E | 3.5 | 325 |
| 6 | ? – 3 | 12 | 81E | 292 | 78E | 7 | 331 |
| 7 | AR – 1 | -16 | 46W | 59 | 49W | 0.5 | 314 |
| 8 | AX – 1 | -10 | 29W | 42 | 32W | - | 332 |
| 9 | AX – 1 | -14 | 08W | 21 | 11W | - | 333 |
| 10 | BRI – 9 | -5 | 08E | 5 | 05E | 5.5 | 330 |
| 11 | BRI – 15 | -6 | 20E | 353 | 17E | 9.5 | 327 |
| 12 | BXO – 3 | -6 | 33E | 340 | 30E | 4.5 | 323 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.