Dataset {
    Float64 /longitude_time[2];
    Float32 /depth[21];
    Float64 /depth_time[21];
    Float64 /time_fix[2];
    String /trajectory_id[15];
    Float32 /trajectoryNameLen[15];
    Float64 /longitude[2];
    Float64 /latitude[2];
    Float32 /NavChart/height_above_sea_floor[162765];
    Float64 /NavChart/height_above_sea_floor_time[162765];
    Float64 /latitude_time[2];
    Float64 /time_fix_time[2];
    Int32 /DeadReckonUsingMultipleVelocitySources/velocity_source[165365];
    Float64 /DeadReckonUsingMultipleVelocitySources/velocity_source_time[165365];
} hotspot-Normal.nc4;