Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 October 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)
- 42
- Relative number (R)
- 82
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19981013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 19 | 74W | 189 | 75W | 3 | 23° 210 |
| 2 | AX – 6 | 22 | 38W | 153 | 39W | 3 | 24° 242 |
| 3 | CAE – 15 | 15 | 11E | 104 | 10E | 4 | 24° 243 |
| 4 | DAC – 19 | -22 | 07W | 122 | 08W | 17 | 29° 238 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.