MeteorHeight_2008_2020.txt
    (Figure 3)
SGO SKiYMET height of meteor detection, V <=100 m/s, el >= 30 deg.
Daily medians, quartiles, and octiles; Number of detections; Hours of operation in the day
Year   Month   Day   L_octile  L_quartile  Median   U_quartile U_oct  Number hours

    AverDailyHistogr.txt
    (Figure 5)
The 11-years composite histograms representing averaged height distribution for each day of year
Height, km:
Day of year; Daily meteor count at given height (Height ± 0.5 km), median over years 2009-2019

    NonSpecular.txt
    (Figure 8)
Daily median height and quartiles for non-specular long-lived and others meteor trails, averaged over years 2009-2019
Non-specular echo is defined if ratio of median amplitude at (-1:-0.5)s before automated meteor detection to that at (0.5:3)s after is larger than 1.2
Others are "sp"
 1   Month          
 2   Day
 3   Number of days when data are available   
 4   Mean number of specular detections in day    
 5   Mean number of LLNS detections in day
 6   Low quartile height of specular detections for the day 
 7   Median height of specular detections for the day
 8   Upper quartile height of specular detections for the day
 9   Low quartile height of LLNS detections for the day
 10  Median height of LLNS detections for the day
 11  Upper quartile height of LLNS detections for the day