Daily Sunspot Evaluation
Observation Sheet Thursday, 3 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)
- 23
- Relative number (R)
- 93
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910103.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 8 | 11E | 151 | 08E | 1.5 | 3 |
| 2 | HA – 1 | -20 | 82W | 244 | 85W | 2 | 7 |
| 3 | AX – 3 | -7 | 42W | 204 | 45W | 3 | 13 |
| 4 | HA – 1 | -10 | 23W | 185 | 26W | 4.5 | 9 |
| 5 | AR – 2 | -24 | 15W | 177 | 18W | 1 | 10 |
| 6 | DAC – 12 | -11 | 03W | 165 | 06W | 8 | 12 |
| 7 | EAO – 2 | -19 | 61E | 101 | 58E | 10.5 | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.