Daily Sunspot Evaluation
Observation Sheet Thursday, 21 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)
- 10
- Number of spots (f)
- 125
- Relative number (R)
- 225
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20010621.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 50 | 15 | 25W | 141 | 27W | 17 | |
| 2 | HK – 11 | 7 | 21W | 137 | 23W | 5 | |
| 3 | HS – 1 | 20 | 12W | 128 | 14W | ~1 | |
| 4 | AX – 1 | 25 | 07W | 123 | 09W | ||
| 5 | FKC – 30 | 18 | 04E | 112 | 02E | 24.5 | |
| 6 | HR – 1 | 10 | 48E | 68 | 46E | 0.5 | |
| 7 | HA – 5 | -14 | 55W | 171 | 57W | ~3.5 | |
| 8 | BXO – 5 | -7 | 41W | 157 | 43W | 5 | |
| 9 | CSI – 16 | -11 | 21W | 137 | 23W | 9 | |
| 10 | BXI – 5 | -21 | 39E | 77 | 37E | 5.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.