Daily Sunspot Evaluation
Observation Sheet Sunday, 15 April 1979
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)
- 7
- Number of spots (f)
- 94
- Relative number (R)
- 164
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790415.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 19 | 4 | 03E | 146 | 00 | 215 | |
| 2 | B – 8 | 17 | 13E | 136 | 10E | 223 | |
| 3 | E – 30 | 31 | 23E | 126 | 20E | 221 | |
| 4 | D – 2 | 8 | 18E | 131 | 15E | 217 | |
| 5 | A – 4 | 5 | 27E | 122 | 24E | 224 | |
| 6 | C – 23 | -24 | 21E | 128 | 18E | 222 | |
| 7 | B – 8 | 19 | 35W | 184 | 38W | 212 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.