Daily Sunspot Evaluation
Observation Sheet Saturday, 22 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)
- 7
- Number of spots (f)
- 22
- Relative number (R)
- 92
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730922.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 12 | 14 | 58E | 254 | 175 | ||
| 2 | J – 2 | 5 | 52E | 260 | 176 | ||
| 3 | B – 4 | 4 | 29E | 283 | 179 | ||
| 4 | A – 1 | -11 | 47E | 265 | 182 | ||
| 5 | J – 1 | 14 | 15W | 327 | 170 | ||
| 6 | A – 1 | 13 | 10W | 322 | 181 | ||
| 7 | A – 1 | 18 | 10W | 322 | 178 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.