Black dots -> compressions (C,c,+,U,u)
White dots -> dilatations (D,d,-)
Green dot  -> T-axis
Red dot    -> P-axis

  sta  chan net loc pol a/m   azi   dist author    irsta
  ANR   ???  IR      -      19.74   1.55 ISC       ANR  
  BZN   ???  IR      -     241.21   1.66 ISC       BZN  
  BZN   SPZ  IR      D     241.21   1.66 MOS       BZN  
  LNA   ???  IR      -     244.50   2.02 ISC       LNA  
  LNA   SPZ  IR      D     244.50   2.02 MOS       LNA  
  SHTS  ???  IR      +     235.08   3.44 ISC       SHTS 
  FRU   ???  IR      -      31.26   4.18 ISC       FRU  
  FRU   SPZ  IR      D      31.26   4.18 MOS       FRU  
  CHCP  ???  IR      -     166.65   5.77 ISC       CHCP 
  SHL   ???  IR      C     122.86  21.81 ISC       SHL  
  GBA   ???  IR      -     167.17  26.09 ISC       GBA  
  MAT   ???  IR      c      70.76  51.48 ISC       MAT  
  BNG   ???  IR      +     248.28  59.15 ISC       BNG  
  MBC   ???  IR      +       2.91  64.53 ISC       MBC  
  INK   ???  IR      +       9.63  71.07 ISC       INK  

sta    - Station code (FDSN)
chan   - channel code
net    - Network code (FDSN)
loc    - Location code (FDSN)
pol    - Polarity
a/m    - Automatic or manual pick
azi    - Event to station azimuth (in degrees)
dist   - Event to station distance (in degrees)
author - Author of the polarity
irsta  - International registry station code