Daily Sunspot Evaluation
Observation Sheet Sunday, 28 July 1985
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)
- 6
- Relative number (R)
- 46
- Observer
- HG
- Reading
- all checks consistent
- File
- 19850728.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 3 | 7 | 62E | 19 | 60E | 3 | |
| 2 | HAX – 1 | 7 | 76E | 5 | 74E | 15 | |
| 3 | AXX – 1 | -11 | 61E | 20 | 59E | - | |
| 4 | HKX – 1 | -13 | 80E | 1 | 78E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.