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
  DZM   ???  IR      c     262.56  13.77 ISC       DZM  
  CTA   ???  IR      +     265.15  32.69 ISC       CTA  
  ASPA  ???  IR      -     257.26  43.68 ISC       ASPA 
  MBL   ???  IR      -     257.83  56.92 ISC       MBL  
  SPA   ???  IR      -     180.00  69.20 ISC       SPA  
  MHC   ???  IR      -      43.01  79.08 ISC       MHC  
  FRI   ???  IR      -      44.22  80.12 ISC       FRI  
  CMB   ???  IR      -      43.04  80.29 ISC       CMB  
  WDC   ???  IR      -      39.97  80.49 ISC       WDC  
  ORV   ???  IR      -      41.28  80.50 ISC       ORV  
  PNT   ???  IR      -      34.24  87.43 ISC       PNT  
  CHTO  ???  IR      -     290.19  89.67 ISC       CHTO 

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