Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19840715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 5 | -9 | 39W | 70 | 42W | 2.5 | 1027 |
| 2 | ARX – 1 | -8 | 02E | 29 | 01W | -94 | 1028 |
| 3 | ARX – 1 | -16 | 29E | 2 | 26E | 0.25 1 | 1030 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.