Daily Sunspot Evaluation
Observation Sheet Monday, 10 September 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)
- 4
- Number of spots (f)
- 51
- Relative number (R)
- 91
- Observer
- FA
- Reading
- all checks consistent
- File
- 19730910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 31 | -11 | 26W | 136 | 466 | ||
| 2 | A – 2 | -19 | 48W | 158 | 469 | ||
| 3 | D – 17 | -10 | 42W | 152 | 468 | ||
| 4 | H – 1 | 13 | 55W | 165 | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.