Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 January 1991
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)
- 55
- Relative number (R)
- 125
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19910122.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 13 | 22 | 05W | 274 | 04W | 6.5 | 35 |
| 2 | CAO – 3 | 9 | 58E | 211 | 59E | 8 | 38 |
| 3 | DAC – 5 | -14 | 68W | 337 | 67W | 5 | 36 |
| 4 | AX – 1 | -20 | 10E | 259 | 11E | - | 35 |
| 5 | AR – 1 | -28 | 37E | 232 | 38E | 0.5 | 40 |
| 6 | FKI – 21 | -18 | 67E | 202 | 68E | 19 | 41 |
| 7 | ? – 11 | -10 | 74E | 195 | 75E | 21 | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.