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
  MAT   ???  IR      d     344.96  15.35 ISC       MAT  
  TRT   ???  IR      +     228.89  41.83 ISC       TRT  
  WB2   ???  IR      -     192.28  42.31 ISC       WB2  
  WRA   ???  IR      +     192.29  42.31 ISC       WRA  
  GBA   ???  IR      +     274.50  62.70 ISC       GBA  
  INK   ???  IR      +      23.55  67.55 ISC       INK  
  MBC   ???  IR      +      14.55  70.83 ISC       MBC  
  WDC   ???  IR      +      50.60  79.35 ISC       WDC  
  ORV   ???  IR      +      51.31  80.44 ISC       ORV  
  CMB   ???  IR      +      52.44  81.79 ISC       CMB  
  FRI   ???  IR      +      53.22  82.67 ISC       FRI  
  LRM   ???  IR      +      42.90  84.20 ISC       LRM  

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