Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 3
- Number of spots (f)
- 9
- Relative number (R)
- 39
- Observer
- HM
- Reading
- all checks consistent
- File
- 19731016.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 5 | -4 | 40W | 35 | 198 | ||
| 2 | A – 3 | -8 | 53W | 48 | 199 | ||
| 3 | A – 1 | 12 | 56W | 51 | 186 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.