Daily Sunspot Evaluation
Observation Sheet Friday, 23 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)
- 12
- Number of spots (f)
- 72
- Relative number (R)
- 192
- Observer
- SG0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AH – 1 | 28 | 56W | 28 ⚠ | 59W | 0. | 246 |
| 2 | AH – 1 | 19 | 29W | 21 ⚠ | 42W | 0. | 246 |
| 3 | GRD – 6 | 20 | 30W | 12 | 33W | 5 | 242 |
| 4 | DAE – 6 | 20 | 15E | 327 | 12E | 4. | 244 |
| 5 | DAC – 13 | 28 | 26E | 316 | 23E | 8. | 237 |
| 6 | DAI – 7 | 22 | 41E | 301 | 38E | 4. | 240 |
| 7 | HK – 1 | -12 | 82W | 64 | 85W | - | 223 |
| 8 | ? – 2 | 20 | 85E | 257 | 82E | - | 247 |
| 9 | CAO – 4 | -19 | 40W | 22 | 43W | 4 | 248 |
| 10 | DAE – 19 | -16 | 11W | 353 | 14W | 7 | 230 |
| 11 | HK – 2 | -37 | 03W | 345 | 06W | 3. | 232 |
| 12 | CAO – 10 | -37 | 08E | 334 | 07E | 11 | 236 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.