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
  SLA   ???  IR      +     124.69   1.42 ISC       SLA  
  YJA   ???  IR      -      34.34   2.09 ISC       YJA  
  CYA   ???  IR      +     169.11   4.59 ISC       CYA  
  LPB   ???  IR      +     350.25   7.45 ISC       LPB  
  RTLL  ???  IR      -     191.08   7.54 ISC       RTLL 
  TCA   ???  IR      -     165.76   7.64 ISC       TCA  
  ZOBO  ???  IR      +     350.38   7.71 ISC       ZOBO 
  RTCV  ???  IR      +     190.69   8.07 ISC       RTCV 
  SAN   ???  IR      -     198.81  10.09 ISC       SAN  
  RFA   ???  IR      +     187.32  10.92 ISC       RFA  
  BHO   ???  IR      -     334.29  63.82 ISC       BHO  
  RLO   ???  IR      -     335.11  65.44 ISC       RLO  
  TUL   ???  IR      +     334.37  65.52 ISC       TUL  
  SPA   ???  IR      -     180.00  66.23 ISC       SPA  
  BUL   ???  IR      d     110.46  86.73 ISC       BUL  
  MTD   ???  IR      d     108.59  90.69 ISC       MTD  

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