Daily Sunspot Evaluation
Observation Sheet Tuesday, 27 September 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)
- 11
- Number of spots (f)
- 135
- Relative number (R)
- 245
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19880927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRO – 11 | 18 | 38W | 327 | 41W | 5.5 | 244 |
| 2 | CAI – 40 | 27 | 26W | 315 | 29W | 11.7 | 237 |
| 3 | CAI – 13 | 23 | 22W | 311 | 29W | 5.5 | 239 |
| 4 | BHO – 8 | 22 | 12W | 301 | 15W | 5.7 | 240 |
| 5 | BHO – 2 | 27 | 11W | 300 | 14W | 5.5 | 250 |
| 6 | DAC – 35 | 20 | 32E | 257 | 29E | 7.5 | 247 |
| 7 | CSI – 15 | -17 | 68W | 357 | 71W | 8 | 230 |
| 8 | BRO – 4 | -22 | 49W | 338 | 52W | 5 | 251 |
| 9 | HK – 1 | -38 | 55W | 344 | 58W | 3.5 | 232 |
| 10 | BHO – 2 | -20 | 30E | 259 | 27E | 3 | 248 |
| 11 | DKC – 4 | -26 | 70E | 219 | 67E | 7 | 249 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.