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
  SNZO  BHZ  IU  00  +   a  81.43   0.42 ISC       SNZO 
  SNZO  HHZ  IU  10  +   a  81.43   0.42 ISC       SNZO 
  SNZO  BHZ  IU  10  +   a  81.43   0.42 ISC       SNZO 
  NNZ   ???  IR      d     284.85   0.60 WEL       NNZ  
  MTW   ???  IR      d      78.54   1.04 WEL       MTW  
  KHZ   HHZ  NZ  10  -   a 203.35   1.14 ISC       KHZ  
  HOWZ  ???  IR      d      65.73   1.14 WEL       HOWZ 
  KHZ   ???  IR      d     203.35   1.14 WEL       KHZ  
  MRZ   ???  IR      c      57.14   1.30 WEL       MRZ  
  QRZ   HHZ  NZ  10  -   a 293.58   1.34 ISC       QRZ  
  BFZ   HHZ  NZ  10  -   a  67.11   1.73 ISC       BFZ  
  HIZ   HHZ  NZ  10  +   a  11.02   2.91 ISC       HIZ  
  HIZ   HHZ  NZ  10  +   a  11.02   2.91 ISC       HIZ  

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