Daily Sunspot Evaluation
Observation Sheet Friday, 9 April 1982
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)
- 13
- Number of spots (f)
- 28
- Relative number (R)
- 158
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19820409.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | 8 | 40W | 202 | 43W | - | 144 |
| 2 | DAI – 11 | 5 | 28W | 190 | 31W | 65 | 137 |
| 3 | HAX – 3 | 7 | 02W | 164 | 05W | 1.25 | 143 |
| 4 | HHX – 1 | 11 | 44E | 118 | 41E | 3.5 | 149 |
| 5 | HAX – 1 | 3 | 57E | 105 | 54E | 2 | 153 |
| 6 | ? – 1 | 15 | 78E | 84 | 75E | - | 158 |
| 7 | HSX – 1 | -17 | 59W | 221 | 62W | 15 | 139 |
| 8 | HSX – 1 | -12 | 01E | 161 | 02W | 1.25 | 140 |
| 9 | ARX – 1 | -24 | 08E | 154 | 05E | - | 155 |
| 10 | HSX – 2 | -4 | 43E | 119 | 40E | 2 | 148 |
| 11 | AXX – 1 | -9 | 57E | 105 | 54E | - | 152 |
| 12 | DAO – 3 | -29 | 63E | 99 | 60E | 9.5 | 151 |
| 13 | ? – 1 | -10 | 87E | 75 | 84E | - | 157 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.