Daily Sunspot Evaluation
Observation Sheet Sunday, 20 May 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)
- 4
- Number of spots (f)
- 34
- Relative number (R)
- 74
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840520.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | -5 | 20W | 71 | 22W | 96 | |
| 2 | CSI – 9 | -13 | 00 | 51 | 02W | 4.35 | 94 |
| 3 | FAC – 20 | -11 | 55E | 356 | 53E | 19.44 | 91 |
| 4 | DAC – 4 | -11 | 75E | 336 | 75E | 6.7 | 92 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.