Daily Sunspot Evaluation
Observation Sheet Thursday, 6 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)
- 6
- Number of spots (f)
- 47
- Relative number (R)
- 107
- Observer
- FA
- Reading
- all checks consistent
- File
- 19730906.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 20 | -13 | 28E | 135 | 166 | ||
| 2 | G – 9 | -18 | 01E | 162 | 162 | ||
| 3 | H – 7 | -15 | 30W | 193 | 157 | ||
| 4 | A – 1 | 15 | 80W | 243 | 167 | ||
| 5 | G – 6 | 22 | 39W | 200 | 163 | ||
| 6 | H – 4 | 14 | 03W | 166 | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.