Daily Sunspot Evaluation
Observation Sheet Thursday, 30 July 1992
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)
- 5
- Number of spots (f)
- 27
- Relative number (R)
- 77
- Observer
- NA
- Reading
- all checks consistent
- File
- 19920730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CBI – 9 | 11 | 70W | 216 | 73W | 7 | 289 |
| 2 | HA – 1 | 14 | 28E | 118 | 25E | 2 | 285 |
| 3 | HA – 6 | 17 | 42E | 104 | 39E | 4 | 286 |
| 4 | BXO – 4 | 15 | 54E | 92 | 51E | 3.5 | 288 |
| 5 | CAO – 7 | -21 | 03E | 143 | 00E | 9 | 282 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.