Daily Sunspot Evaluation
Observation Sheet Wednesday, 31 October 1973
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)
- 5
- Number of spots (f)
- 13
- Relative number (R)
- 63
- Observer
- HM
- Reading
- all checks consistent
- File
- 19731031.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 16 | 01°E | 155 | 202 | ||
| 2 | A – 2 | 3 | 42°E | 114 | 205 | ||
| 3 | A – 1 | -21 | 21°W | 177 | 208 | ||
| 4 | H – 8 | -15 | 46°W | 202 | 201 | ||
| 5 | J – 1 | 11 | 12°W | 168 | 203 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.