Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 August 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)
- 4
- Number of spots (f)
- 21
- Relative number (R)
- 61
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19980804.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 19 | 40W | 1 | 43W | 3.5 | 164 |
| 2 | HS – 1 | 26 | 26W | 347 | 29W | 2 | 156 |
| 3 | DSI – 10 | 15 | 02W | 322 | 05W | 7 | 165,164 |
| 4 | FAO – 7 | -22 | 57E | 264 | 54E | 16 | 163 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.