Daily Sunspot Evaluation
Observation Details Tuesday, 20 October 2015
- No
- 17580
- Date
- 2015 / 10 / 20,337
- Time
- 08:05 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 4
- Number of spots (f)
- 43
- Relative number (R)
- 83
- Lf
- 2
- P0
- 25.92°
- B0
- 5.50°
- L0
- 152.01°
- Observer
- Sinan ALİŞ
Remarks: Hafif Sis
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 24 | 9 | 43E | 109 | 41E | 14.4 | |
| 2 | DSC – 17 | -10 | 12W | 164 | 14W | 6.0 | |
| 3 | HS_ – 1 | -14 | 28E | 124 | 26E | 1.4 | |
| 4 | HS_ – 1 | -19 | 55E | 98 | 53E | 1.8 |
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