Daily Sunspot Evaluation
Observation Sheet Saturday, 19 May 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)
- 21
- Relative number (R)
- 51
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730519.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 12 | 24E | 154 | 30 | ||
| 2 | H – 15 | 10 | 30E | 148 | 38 | ||
| 3 | B – 5 | -10 | 20W | 198 | 37 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.