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
  SVA   ???  IR      +     302.11   3.57 ISC       SVA  
  CTA   ???  IR      -     263.73  33.20 ISC       CTA  
  ASPA  ???  IR      -     256.33  44.30 ISC       ASPA 
  WB2   ???  IR      -     261.67  44.32 ISC       WB2  
  WRA   ???  IR      -     261.67  44.33 ISC       WRA  
  MTN   ???  IR      -     270.29  48.82 ISC       MTN  
  SPA   ???  IR      +     180.00  70.07 ISC       SPA  
  MHC   ???  IR      -      42.90  78.15 ISC       MHC  
  CMB   ???  IR      -      42.93  79.37 ISC       CMB  
  WDC   ???  IR      -      39.84  79.55 ISC       WDC  
  ORV   ???  IR      -      41.17  79.56 ISC       ORV  
  MNA   ???  IR      -      43.63  81.03 ISC       MNA  
  CHTO  ???  IR      -     290.02  89.77 ISC       CHTO 
  SES   ???  IR      -      36.21  91.71 ISC       SES  
  INK   ???  IR      -      15.23  93.93 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