Daily Sunspot Evaluation
Observation Sheet Friday, 18 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)
- 60
- Relative number (R)
- 120
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20010518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 27 | 51W | 258 | 59W | 12 | |
| 2 | EAC – 15 | 14 | 24W | 231 | 27W | 12.5 | |
| 3 | DAC – 18 | 18 | 46W | 253 | 49W | 8 | |
| 4 | HS – 1 | 19 | 71E | 136 | 68E | 2 | |
| 5 | ? – 1 | 6 | 78E | 129 | 75E | ? | |
| 6 | EAC – 23 | -17 | 70W | 277 | 73W | 18 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.