Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 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)
- 48
- Relative number (R)
- 168
- Observer
- HM
- Reading
- all checks consistent
- File
- 19820407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 20 | 86W | 274 | 89W | 2 | 131 |
| 2 | CAO – 4 | 8 | 13W | 202 | 16W | 3 | 144 |
| 3 | HAX – 5 | 5 | 02W | 190 | 05W | 2 | 137 |
| 4 | HAX – 1 | 7 | 24E | 164 | 21E | 1.5 | 145 |
| 5 | BAO – 9 | 8 | 32E | 156 | 29E | 4 | 141 |
| 6 | HAX – 1 | 12 | 68E | 120 | 65E | 3 | 149 |
| 7 | AXX – 1 | -15 | 71W | 259 | 74W | 150 | |
| 8 | DAI – 8 | -7 | 43W | 231 | 46W | 4 | 145 |
| 9 | CAO – 2 | -17 | 32W | 220 | 35W | 4.5 | 139 |
| 10 | CAI – 8 | -18 | 23W | 211 | 26W | 4 | 136 |
| 11 | DAC – 7 | -13 | 28E | 160 | 25E | 4 | 140 |
| 12 | HAX – 1 | -5 | 69E | 119 | 66E | 2 | 148 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.