Daily Sunspot Evaluation
Observation Sheet Friday, 21 January 2000
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)
- 7
- Number of spots (f)
- 56
- Relative number (R)
- 126
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20000121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 15 | 49W | 147 | 49W | 2 | |
| 2 | HH – 6 | 16 | 15W | 115 | 17W | 3 | |
| 3 | CSI – 10 | 10 | 02E | 98 | 00 | 4 | |
| 4 | CSO – 7 | 12 | 36E | 64 | 34E | 5 | |
| 5 | DKC – 10 | -10 | 57W | 157 | 59W | 10 | |
| 6 | EKO – 14 | -19 | 27W | 127 | 29W | 12 | |
| 7 | BXO – 7 | -25 | 32E | 68 | 30E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.