Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 October 1998
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)
- 6
- Number of spots (f)
- 51
- Relative number (R)
- 111
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19981020.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 14 | 82W | 106 | 85W | ? | 243 |
| 2 | DAO – 7 | 15 | 69W | 93 | 72W | 10 | 244 |
| 3 | DSO – 14 | 25 | 13W | 37 | 16W | 9 | 245 |
| 4 | BXO – 2 | 20 | 05W | 29 | 08W | 5 | 246 |
| 5 | CSI – 12 | 19 | 20E | 4 | 17E | 8.5 | 247 |
| 6 | DSI – 14 | -28 | 10W | 34 | 13E | 6 | 248 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.