Daily Sunspot Evaluation
Observation Sheet Saturday, 19 July 1975
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)
- 16
- Relative number (R)
- 46
- Observer
- FA
- Reading
- all checks consistent
- File
- 19750719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 12 | -7 | 09E | 167 | 06E | ||
| 2 | J – 2 | -11 | 40W | 216 | 48W | ||
| 3 | A – 2 | -3 | 26W | 202 | 28W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.