Daily Sunspot Evaluation
Observation Sheet Thursday, 24 July 1997
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)
- 11
- Relative number (R)
- 41
- Observer
- TA
- Reading
- all checks consistent
- File
- 19970724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 17 | 32W | 276 | 35W | 2 | 52 |
| 2 | DRO – 3 | 27 | 11W | 252 | 14W | 6 | 50 |
| 3 | DAO – 5 | 23 | 58E | 186 | 55E | 6.5 | 51 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.