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
  BAK   ???  IR      +     275.49   1.43 ISC       BAK  
  LNK   ???  IR      +     236.39   2.64 ISC       LNK  
  KRV   ???  IR      -     277.00   4.11 ISC       KRV  
  GRS   ???  IR      +     261.39   4.18 ISC       GRS  
  TEH   ???  IR      c     183.05   4.51 ISC       TEH  
  IR2   ???  IR      +     187.90   4.62 ISC       IR2  
  NAK   ???  IR      +     259.81   4.94 ISC       NAK  
  GRO   ???  IR      -     306.63   5.39 ISC       GRO  
  MTA   ???  IR      +     287.70   5.41 ISC       MTA  
  STE   ???  IR      +     280.03   5.61 ISC       STE  
  MLR   ???  IR      +     294.03  19.54 ISC       MLR  
  SEM   ???  IR      +      53.49  22.38 ISC       SEM  
  ELT   ???  IR      +      49.27  26.73 ISC       ELT  
  KBA   ???  IR      -     296.75  28.34 ISC       KBA  
  EKA   ???  IR      +     311.71  38.73 ISC       EKA  
  BNG   ???  IR      -     228.71  46.49 ISC       BNG  

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