Daily Sunspot Evaluation
Observation Sheet Friday, 25 September 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)
- 9
- Number of spots (f)
- 65
- Relative number (R)
- 155
- Observer
- MB
- Reading
- all checks consistent
- File
- 19980925.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 3 | 19 | 34W | 28 | 37W | 04 | 218 214 |
| 2 | HA – 2 | 31 | 23W | 17 | 26W | 02 | 214 213 |
| 3 | DVI – 18 | 20 | 18W | 12 | 21W | 08 | 215 214 |
| 4 | BXO – 6 | 39 | 02W | 356 | 05W | 4.5 | 214 218 |
| 5 | DAO – 4 | -30 | 60W | 54 | 63W | 06 | 213 212 |
| 6 | CRI – 12 | -29 | 35E | 319 | 32E | 05 | 223 222 |
| 7 | HR – 1 | -32 | 43E | 311 | 40E | 01 | 221 223 |
| 8 | CRI – 16 | -20 | 09W | 3 | 12W | 09 | 220 219 |
| 9 | BXO – 3 | -15 | 62W | 56 | 5W | 02 | 223 221 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.