Daily Sunspot Evaluation
Observation Sheet Thursday, 28 June 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)
- 9
- Number of spots (f)
- 46
- Relative number (R)
- 136
- Observer
- MB
- Reading
- all checks consistent
- File
- 20010628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 10 | 45W | 69 | 48W | ~5 | |
| 2 | DAO – 5 | 22 | 02W | 26 | 05W | ~9 | |
| 3 | CBI – 7 | 17 | 02W | 26 | 05W | ~3.5 | |
| 4 | HS – 4 | 11 | 10E | 14 | 07E | 4 | |
| 5 | CAO – 7 | -23 | 57W | 81 | 60W | 7 | |
| 6 | CSI – 8 | -6 | 14W | 38 | 17W | 5 | |
| 7 | CAO – 7 | -47 | 43E | 341 | 40E | ~10 | |
| 8 | AX – 2 | -7 | 57E | 327 | 54E | ~1 | |
| 9 | HA – 1 | -8 | 74E | 310 | 71E | ~1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.