Daily Sunspot Evaluation
Observation Sheet Sunday, 11 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)
- 12
- Number of spots (f)
- 61
- Relative number (R)
- 181
- Observer
- OG
- Reading
- all checks consistent
- File
- 19820411.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | PAI – 8 | 6 | 55W | 190 | 58W | 9 | 137 |
| 2 | ARX – 1 | 7 | 30W | 165 | 33W | 143 | |
| 3 | DKI – 14 | 15 | 14E | 121 | 11E | 10 | 157 |
| 4 | HKX – 1 | 11 | 17E | 118 | 14E | 35 | 149 |
| 5 | HAX – 2 | 2 | 29E | 106 | 26E | 2 | 153 |
| 6 | HAX – 1 | 15 | 54E | 81 | 51E | 15 | 158 |
| 7 | BRO – 4 | -11 | 25W | 160 | 28W | 3 | 140 |
| 8 | CAO – 3 | -4 | 15E | 120 | 12E | 4 | 148 |
| 9 | CAO – 8 | -10 | 23E | 112 | 20E | 6 | 161 |
| 10 | CAI – 12 | -28 | 35E | 100 | 32E | 105 | 151 |
| 11 | CAO – 6 | -12 | 57E | 78 | 54E | 8 | 157 |
| 12 | HHX – 1 | -10 | 60E | 75 | 57E | 45 | 165 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.