Daily Sunspot Evaluation
Observation Sheet Thursday, 23 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)
- 24
- Relative number (R)
- 74
- Observer
- NA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HB – 1 | 25 | 63W | 306 ⚠ | 70W | 0.5 | 270 |
| 2 | CAO – 13 | 19 | 07W | 245 | 09W | 5.5 | 273 |
| 3 | CAO – 4 | 5 | 4W | 279 ⚠ | 43W | 4.5 | 281 |
| 4 | HA – 2 | -4 | 62W | 300 | 64W | 3 | 278 |
| 5 | CAO – 4 | -17 | 68W | 306 | 70W | 7 | 275 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.