Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 July 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)
- 2
- Number of spots (f)
- 2
- Relative number (R)
- 22
- Observer
- TS
- Reading
- all checks consistent
- File
- 19840718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | -9 | 79W | 70 | 81W | 3 | 129 |
| 2 | ARX – 1 | -18 | 06W | 357 | 08W | 0.5 | 130 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.