Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 April 1980
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)
- 121
- Relative number (R)
- 191
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FCC – 38 | 13 | 14W | 104 | 17W | 14 | |
| 2 | FCC – 51 | 24 | 03E | 87 | 00 | 17 | |
| 3 | AXX – 3 | -10 | 47W | 137 | 50W | 25 | |
| 4 | HAX – 10 | -20 | 51E | 39 | 48E | 8 | |
| 5 | DAI – 9 | -30 | 66E | 24 | 63E | 11 | |
| 6 | AXX – 3 | -33 | 75E | 15 | 72E | 5E | |
| 7 | DRI – 7 | -8 | 78E | 12 | 75E | 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.