Daily Sunspot Evaluation
Observation Sheet Monday, 21 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)
- 3
- Number of spots (f)
- 24
- Relative number (R)
- 54
- Observer
- TS
- Reading
- all checks consistent
- File
- 19840521.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | -13 | 16W | 54 | 18W | 2 | 91 |
| 2 | FAC – 20 | -12 | 41E | 357 | 39E | 20 | 92 |
| 3 | DAC – 2 | -11 | 64E | 334 | 62E | 4 | 97 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.