Daily Sunspot Evaluation
Observation Sheet Monday, 19 July 1993
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)
- 7
- Number of spots (f)
- 31
- Relative number (R)
- 101
- Observer
- MB
- Reading
- all checks consistent
- File
- 19930719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRO – 8 | 6 | 40W | 194 | 43W | 5.5 | 185 |
| 2 | HS – 4 | 8 | 34E | 120 | 31E | 0.3 | 186 |
| 3 | ? – 1 | -9 | 75W | 229 | 78W | 0.2 | 182 |
| 4 | DRO – 5 | -18 | 31W | 185 | 34W | 7.5 | 189 |
| 5 | HS – 1 | -12 | 47E | 107 | 46E | 2.5 | 187 |
| 6 | BXO – 8 | -20 | 52E | 102 | 49E | 0.5 | 188 |
| 7 | ? – 4 | -10 | 72E | 82 | 69E | 0.6 | 190 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.