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
  CYA   ???  IR      +      67.96   1.48 ISC       CYA  
  RTLL  ???  IR      -     202.32   2.50 ISC       RTLL 
  ZON   ???  IR      +     203.90   2.77 ISC       ZON  
  RTBS  ???  IR      +     213.83   3.20 ISC       RTBS 
  SLA   ???  IR      +      21.67   4.58 ISC       SLA  
  PEL   ???  IR      +     213.83   5.01 ISC       PEL  
  SAN   ???  IR      c     211.69   5.25 ISC       SAN  
  PCH   ???  IR      c     209.59   5.33 ISC       PCH  
  RFA   ???  IR      +     188.99   5.82 ISC       RFA  
  LNV   ???  IR      c     214.00   6.02 ISC       LNV  
  ARE   ???  IR      +     342.19  13.05 ISC       ARE  
  NNA   ???  IR      +     330.50  19.10 ISC       NNA  
  BAO   ???  IR      +      57.46  22.28 ISC       BAO  
  PURC  ???  IR      -     343.01  32.33 ISC       PURC 
  SILC  ???  IR      -     343.22  32.67 ISC       SILC 
  BUGC  ???  IR      -     343.91  33.81 ISC       BUGC 
  HOBC  ???  IR      -     344.31  34.23 ISC       HOBC 
  SYO   ???  IR      -     158.34  69.02 ISC       SYO  
  TUL   ???  IR      -     335.70  69.90 ISC       TUL  
  MEO   ???  IR      -     332.99  69.97 ISC       MEO  
  GSC   ???  IR      -     320.75  79.15 ISC       GSC  

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