Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 November 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)
- 7
- Relative number (R)
- 37
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19731120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | -14 | 48E | 205 | 218 | ||
| 2 | B – 4 | 14 | 15W | 268 | 211 | ||
| 3 | A – 1 | 13 | 06W | 253 ⚠ | 213 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.