Daily Sunspot Evaluation
Observation Sheet Friday, 31 August 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)
- 7
- Number of spots (f)
- 34
- Relative number (R)
- 104
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730831.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | 14 | 79E | 163 | 159 | ||
| 2 | H – 5 | -15 | 48E | 194 | 157 | ||
| 3 | B – 9 | -13 | 03W | 245 | 158 | ||
| 4 | D – 4 | 5 | 10W | 252 | 160 | ||
| 5 | G – 11 | 3 | 29W | 271 | 155 | ||
| 6 | J – 1 | 15 | 18W | 260 | 153 | ||
| 7 | A – 1 | 15 | 02W | 244 | 156 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.