Daily Sunspot Evaluation
Observation Sheet Thursday, 30 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)
- 6
- Number of spots (f)
- 27
- Relative number (R)
- 87
- Observer
- YK
- Reading
- all checks consistent
- File
- 19980730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 27 | 57W | 84 | 60W | 7 | 158 |
| 2 | DAI – 19 | 31 | 24W | 51 | 27W | 6.5 | 153 |
| 3 | HS – 1 | 25 | 39E | 348 | 36E | 2 | 156 |
| 4 | AX – 1 | -19 | 38W | 65 | 41W | 159 | |
| 5 | EHA – 2 | -23 | 29W | 56 | 32W | 9 | 151 |
| 6 | AR – 1 | -28 | 72E | 315 | 69E | 1 | 160 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.