Daily Sunspot Evaluation
Observation Sheet Thursday, 31 May 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)
- 6
- Number of spots (f)
- 41
- Relative number (R)
- 101
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 7 | 16 | 76W | 111 | 79W | 2.9 | |
| 2 | HA – 1 | 3 | 65W | 100 | 68W | 2.5 | |
| 3 | CAO – 9 | 20 | 02W | 37 | 05W | 2.5 | |
| 4 | EAC – 18 | 18 | 15E | 20 | 12E | 13.5 | |
| 5 | HA – 2 | -8 | 71W | 106 | 74W | 2.1 | |
| 6 | DAO – 4 | -15 | 43E | 352 | 40E | 2.8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.