Daily Sunspot Evaluation
Observation Sheet Sunday, 29 July 2001
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)
- 5
- Number of spots (f)
- 21
- Relative number (R)
- 71
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20010729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BAO – 2 | 13 | 39W | 13 | 42W | 2 | |
| 2 | AX – 1 | 18 | 54E | 280 | 51E | - | |
| 3 | DAO – 6 | -24 | 05W | 339 | 08W | ~8 | |
| 4 | HA – 2 | -19 | 40E | 294 | 33E | 2 | |
| 5 | DAO – 10 | -22 | 52E | 282 | 49E | ~6.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.