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
  BRS   ???  IR      +     172.19  48.76 ISC       BRS  
  PSI   ???  IR      -     254.84  49.46 ISC       PSI  
  WARB  ???  IR      -     202.81  50.80 ISC       WARB 
  SEM   ???  IR      +     316.84  58.66 ISC       SEM  
  SEM   SPZ  IR      C     316.84  58.66 MOS       SEM  
  PRZ   ???  IR      +     307.58  59.78 ISC       PRZ  
  GBA   ???  IR      +     275.74  65.61 ISC       GBA  
  POO   ???  IR      -     281.93  67.52 ISC       POO  
  SVE   ???  IR      -     324.34  70.09 ISC       SVE  
  SVE   SPZ  IR      D     324.34  70.09 MOS       SVE  
  EDM   ???  IR      +      37.00  79.30 ISC       EDM  
  GRS   ???  IR      -     309.96  83.99 ISC       GRS  
  GRS   SPZ  IR      D     309.96  83.99 MOS       GRS  

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