Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 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)
- 62
- Relative number (R)
- 182
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19820413.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 8 | 78W | 188 | 81W | 157 | |
| 2 | EKC – 24 | 16 | 13W | 123 | 16W | 12 | 159 |
| 3 | HHX – 2 | 12 | 08W | 118 | 11W | 3 | 149 |
| 4 | HAX – 2 | 3 | 02E | 108 | 01W | 1 | 153 |
| 5 | AXX – 1 | 23 | 27E | 83 | 24E | 164 | |
| 6 | HAX – 1 | 16 | 28E | 82 | 05E | 1.25 | 158 |
| 7 | ? – 1 | 2 | 84E | 26 | 81E | 163 | |
| 8 | HAX – 6 | -3 | 12W | 122 | 15W | 2 | 148 |
| 9 | QXI – 8 | -8 | 06W | 116 | 09W | 3.25 | 161 |
| 10 | DAI – 9 | -28 | 09E | 101 | 06E | 11.5 | 151 |
| 11 | DAO – 6 | -12 | 29E | 81 | 26E | 7.5 | 157 |
| 12 | HHX – 1 | -9 | 33E | 77 | 30E | 3 | 160 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.