Daily Sunspot Evaluation
Observation Sheet Saturday, 17 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)
- 7
- Number of spots (f)
- 60
- Relative number (R)
- 130
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19981017.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 16 | -15 | 45W | 108 | 48W | 8.5 | 21.4.343 |
| 2 | ORT – 14 | 14 | 28W | 91 | 31W | 6.5 | 21.5.2411 |
| 3 | ORT – 11 | 24 | 28E | 35 | 25E | 7 | 21.6.2425 |
| 4 | AX – 3 | 18 | 35E | 28 | 32E | 2.5 | 21.8.2416 |
| 5 | HA – 1 | 19 | 56E | 7 | 53E | 1 | 21.8.2417 |
| 6 | EHO – 14 | -20 | 42W | 105 | 49W | 11 | 21.8.2418 |
| 7 | AX – 1 | -22 | 18W | 81 | 21W | - | 25.8.2409 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.