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
  MTN   ???  IR      -     171.02   6.45 ISC       MTN  
  WB5   ???  IR      -     163.18  13.99 ISC       WB5  
  WRA   ???  IR      -     163.36  14.04 ISC       WRA  
  QIS   ???  IR      +     147.63  16.80 ISC       QIS  
  MBL   ???  IR      +     213.19  17.70 ISC       MBL  
  KKM   ???  IR      -     311.53  18.59 ISC       KKM  
  WARB  ???  IR      -     189.16  19.92 ISC       WARB 
  NANU  ???  IR      +     219.76  21.32 ISC       NANU 
  KLB   ???  IR      -     203.22  27.57 ISC       KLB  
  BRS   ???  IR      -     136.68  29.97 ISC       BRS  
  CHG   ???  IR      +     309.83  39.66 ISC       CHG  
  GBA   ???  IR      +     291.07  55.95 ISC       GBA  

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