Daily Sunspot Evaluation
Observation Sheet Saturday, 5 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)
- 10
- Number of spots (f)
- 61
- Relative number (R)
- 161
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910105.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 6 | 9 | 57W | 193 | 60W | 3 | 16 |
| 2 | AX – 1 | 13 | 39W | 175 | 42W | 17 | |
| 3 | HS – 9 | 9 | 15W | 151 | 18W | 2.5 | 3 |
| 4 | AX – 1 | 11 | 03W | 139 | 06W | 18 | |
| 5 | DAI – 14 | -7 | 69W | 205 | 72W | 6.5 | 13 |
| 6 | HS – 2 | -11 | 50W | 186 | 53W | 2 | 9 |
| 7 | BRI – 7 | -24 | 40W | 176 | 43W | 10.5 | 10 |
| 8 | DAC – 14 | -10 | 31W | 167 | 34W | 8.5 | 12 |
| 9 | CAO – 6 | -18 | 36E | 100 | 33E | 11 | 14 |
| 10 | HA – 1 | -11 | 61E | 75 | 58E | 1 | 15 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.