Daily Sunspot Evaluation
Observation Sheet Thursday, 22 February 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)
- 32
- Relative number (R)
- 82
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 18 | 68W | 317 | 71W | 1.5 | |
| 2 | DAC – 7 | 12 | 61E | 188 | 58E | 6.5 | |
| 3 | DRO – 2 | -25 | 55W | 304 | 58W | 5.5 | |
| 4 | DKC – 21 | -10 | 36W | 285 | 39W | 0.8 | |
| 5 | HS – 1 | -11 | 54E | 195 | 51E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.