Daily Sunspot Evaluation
Observation Sheet Sunday, 19 July 1998
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)
- 32
- Relative number (R)
- 62
- Observer
- MB
- Reading
- all checks consistent
- File
- 19980719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRO – 11 | -23 | 42W | 214 | 64W | 09 | 138 |
| 2 | DAO – 20 | -21 | 24W | 196 | 26W | 09 | 145 |
| 3 | HR – 1 | -19 | 70E | 102 | 68E | 0.5 | 147 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.