Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 9
- Number of spots (f)
- 51
- Relative number (R)
- 141
- Observer
- TA
- Reading
- all checks consistent
- File
- 20010715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 6 | 79W | 238 | 82W | - | |
| 2 | HA – 3 | 6 | 18E | 141 | 15E | 2 | |
| 3 | HA – 1 | 16 | 39E | 120 | 36E | ~3 | |
| 4 | DSI – 5 | 17 | 52E | 107 | 49E | 5.5 | |
| 5 | DXO – 2 | 7 | 76E | 83 | 73E | 4 | |
| 6 | DRI – 6 | -9 | 44W | 203 | 47W | 6.5 | |
| 7 | BXO – 6 | -7 | 06W | 165 | 09W | 5 | |
| 8 | EAC – 26 | -18 | 05W | 164 | 08W | 12 | |
| 9 | ? – 1 | -21 | 80E | 79 | 77E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.