Daily Sunspot Evaluation
Observation Sheet Sunday, 13 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)
- 5
- Number of spots (f)
- 56
- Relative number (R)
- 106
- Observer
- NA
- Reading
- all checks consistent
- File
- 20010513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 22 | 75W | 347 | 76W | ~3 | |
| 2 | DAO – 9 | 5 | 10W | 282 | 11W | ~7.5 | |
| 3 | EAC – 18 | 13 | 41E | 231 | 40E | ~14 | |
| 4 | DSI – 7 | -22 | 30W | 302 | 31W | ~6 | |
| 5 | EAC – 21 | -18 | 03W | 275 | 04W | ~12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.