Daily Sunspot Evaluation
Observation Sheet Sunday, 17 October 1993
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)
- 3
- Number of spots (f)
- 18
- Relative number (R)
- 48
- Observer
- HE
- Reading
- all checks consistent
- File
- 19931017.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRO – 7 | 6 | 24W | 68 | 27W | 4 | 254 |
| 2 | CSO – 2 | -20 | 36W | 80 | 33W | 11 | 250 |
| 3 | HA – 9 | -8 | 58E | 346 | 55E | 3 | 253 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.