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
  RPZ   HHZ  NZ  10  -   a 260.13   1.32 ISC       RPZ  
  BSWZ  ???  IR      d      23.49   1.94 WEL       BSWZ 
  FOZ   ???  IR      c     268.21   2.20 WEL       FOZ  
  ODZ   HHZ  NZ  10  +   a 224.90   2.21 ISC       ODZ  
  NNZ   ???  IR      c      10.09   2.32 WEL       NNZ  
  QRZ   ???  IR      d     354.94   2.69 WEL       QRZ  
  WKZ   ???  IR      c     242.99   3.05 WEL       WKZ  
  BFZ   HHZ  NZ  10  -   a  43.08   3.79 ISC       BFZ  
  DCZ   ???  IR      c     242.31   4.52 WEL       DCZ  
  TUVZ  ???  IR      d      27.51   4.73 WEL       TUVZ 
  HIZ   ???  IR      c      17.67   5.21 WEL       HIZ  
  QSPA  BHZ  IU  70  +   a 180.05  46.63 ISC       QSPA 

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