Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 73
- Relative number (R)
- 193
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19820412.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 7 | 7 | 71W | 191 | 72W | 10 | 137 |
| 2 | DKC – 30 | 16 | 02W | 122 | 03W | 10.5 | 157 |
| 3 | HHX – 3 | 12 | 03E | 117 | 02E | 2.5 | 144 |
| 4 | HSX – 2 | 3 | 13E | 107 | 12E | 1 | 153 |
| 5 | HSX – 1 | 16 | 38E | 82 | 37E | 1.25 | 158 |
| 6 | AXX – 1 | -11 | 73W | 193 | 74W | 162 | |
| 7 | AXX – 1 | -11 | 42W | 162 | 43W | 140 | |
| 8 | HAX – 3 | -4 | 01W | 121 | 02W | 1.5 | 146 |
| 9 | BXO – 3 | -9 | 05E | 115 | 04E | 3.25 | 161 |
| 10 | EKI – 14 | -28 | 19E | 101 | 18E | 11.5 | 151 |
| 11 | DAO – 7 | -12 | 40E | 80 | 39E | 8 | 157 |
| 12 | HHX – 1 | -9 | 43E | 77 | 42E | 2.5 | 160 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.