Daily Sunspot Evaluation
Observation Sheet Thursday, 13 October 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)
- 13
- Number of spots (f)
- 56
- Relative number (R)
- 186
- Observer
- TÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19881013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 5 | 22 | 51W | 129 | 54W | 5 | 260 |
| 2 | AX – 3 | 27 | 35W | 113 | 38W | 2.5 | 261 |
| 3 | AX – 2 | 13 | 12W | 80 ⚠ | 15W | 1 | 269 |
| 4 | AX – 1 | 26 | 30E | 48 | 27E | 0.5 | 274 |
| 5 | CSI – 7 | 19 | 46E | 32 | 43E | 3 | 271 |
| 6 | DSI – 11 | 19 | 55E | 23 | 52E | 9 | 272 |
| 7 | HK – 2 | -18 | 75W | 157 ⚠ | 82W | 11 | 259 |
| 8 | CHO – 7 | -30 | 72W | 150 | 75W | 14 | 263 |
| 9 | BXO – 4 | -15 | 53W | 131 | 56W | 3.5 | 273 |
| 10 | BXO – 6 | -31 | 06W | 84 | 09W | 6 | 266 |
| 11 | BXO – 4 | -20 | 10E | 68 | 07E | 3.5 | 275 |
| 12 | HA – 3 | -11 | 15E | 63 | 12E | 2.9 | 276 |
| 13 | AX – 1 | -24 | 27E | 51 | 24E | 0.5 | 277 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.