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
  MHC   ???  IR      +      89.77   0.11 ISC       MHC  
  ARN   ???  IR      +      87.58   0.20 ISC       ARN  
  GCC   ???  IR      -     209.34   0.36 ISC       GCC  
  PCC   ???  IR      +     288.44   0.51 ISC       PCC  
  SAO   ???  IR      -     155.17   0.63 ISC       SAO  
  BKS   ???  IR      -     325.95   0.65 ISC       BKS  
  BRK   ???  IR      -     324.37   0.66 ISC       BRK  
  ZSP   ???  IR      -     327.94   0.71 ISC       ZSP  
  LLA   ???  IR      +     136.96   0.98 ISC       LLA  
  PRS   ???  IR      -     161.85   1.06 ISC       PRS  
  CMB   ???  IR      -      57.51   1.30 ISC       CMB  
  PRI   ???  IR      +     142.90   1.50 ISC       PRI  
  FRI   ???  IR      +     101.29   1.69 ISC       FRI  
  ORV   ???  IR      -       5.57   2.22 ISC       ORV  
  MIN   ???  IR      +       2.51   3.00 ISC       MIN  
  WDC   ???  IR      -     349.82   3.29 ISC       WDC  
  FHC   ???  IR      -     334.26   3.86 ISC       FHC  

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