Statistics of radar altitude estimates of plume-top over time intervals of 24...

Radar did not detect plume when below about 2.9 km due to mountain ranges and curvature of the Earth.Date/time (UTC) refer to the end of the time interval.受山脉地形与地球曲率影响，当高度低于约2.9千米时，雷达无法探测到羽流。采用的协调世界时（UTC）日期与时间，指代对应时间区间的结束时刻。