Daily Sunspot Evaluation
Observation Sheet Thursday, 15 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)
- 15
- Number of spots (f)
- 71
- Relative number (R)
- 221
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19820415.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAO – 27 | 15 | 40W | 123 | 43W | 159 | |
| 2 | HAX – 1 | 11 | 35W | 118 | 38W | 149 | |
| 3 | HAX – 1 | 2 | 24W | 107 | 27W | 153 | |
| 4 | HSX – 1 | 15 | 03E | 80 | 00 | 158 | |
| 5 | HAX – 1 | 2 | 57E | 26 | 54E | 163 | |
| 6 | AXX – 1 | -2 | 55W | 138 | 58W | 166 | |
| 7 | AXX – 2 | -18 | 39W | 122 | 42W | 168 | |
| 8 | AXX – 2 | -12 | 39W | 122 | 42W | 169 | |
| 9 | CAI – 6 | -3 | 39W | 122 | 42W | 148 | |
| 10 | BXO – 2 | -8 | 33W | 116 | 36W | 161 | |
| 11 | CAI – 11 | -28 | 19W | 102 | 22W | 151 | |
| 12 | ARX – 3 | -11 | 01W | 84 | 04W | 157 | |
| 13 | HAX – 2 | -11 | 07E | 76 | 04E | 160 | |
| 14 | BRO – 10 | -18 | 30E | 53 | 27E | 167 | |
| 15 | AXX – 1 | -25 | 39E | 44 | 36E | 165 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.