Daily Sunspot Evaluation
Observation Sheet Monday, 21 January 2002
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)
- 11
- Number of spots (f)
- 56
- Relative number (R)
- 166
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20020121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 6 | 54W | 226 | 56W | 2 | |
| 2 | HA – 4 | 10 | 44W | 216 | 46W | 2.5 | |
| 3 | DAI – 9 | 15 | 20W | 192 | 22W | 4 | DST-13 |
| 4 | CAO – 4 | 28 | 08E | 164 | 06E | 5 | CSO-7 |
| 5 | DAC – 13 | 17 | 22E | 150 | 20E | 8 | DSO-7 |
| 6 | HS – 1 | -5 | 59W | 231 | 61W | ~2 | |
| 7 | CAO – 3 | -26 | 50W | 222 | 52W | 8 | |
| 8 | HA – 5 | -12 | 30W | 202 | 32W | ~4 | |
| 9 | DAO – 7 | -3 | 23W | 195 | 25W | 4 | |
| 10 | CSO – 6 | -15 | 29E | 143 | 27E | ~5 | |
| 11 | HH – 3 | -7 | 40E | 132 | 38E | 6.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.