Daily Sunspot Evaluation
Observation Sheet Sunday, 22 April 1984
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)
- 5
- Number of spots (f)
- 17
- Relative number (R)
- 67
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 8 | 81W | 143 | 84W | 7 | 72 |
| 2 | BXI – 6 | -15 | 18W | 80 | 21W | 4.5 | 73 |
| 3 | CSI – 4 | -11 | 24E | 38 | 21E | 4 | 74 |
| 4 | CAO – 4 | -11 | 70E | 352 | 67E | 5 | 76 |
| 5 | ? – 1 | -11 | 82E | 340 | 79E | 5 | 77 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.