"Level #21 of flight 170331a"
20170331
  0   48.15445   16.60206     3766.8   20170331 093400  A        0.0      0.0
  1   48.25976   16.54301     3766.8   20170331 093530  I       10.2      0.0
  2   48.36507   16.48396     3766.8   20170331 093700   W       10.2      0.0