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
  JTS   S?Z  IR      C      55.71  14.49 MOS       JTS  
  NNA   S?Z  IR      C     125.46  24.55 MOS       NNA  
  HKT   S?Z  IR      D       2.32  27.64 MOS       HKT  
  PFO   B?Z  IR      C     331.99  36.15 MOS       PFO  
  LOHW  BHZ  IW  00  -   a 345.56  42.97 ISC       LOHW 
  ULM   B?Z  IR      D       1.04  47.90 MOS       ULM  
  KDAK  S?Z  IR      C     332.06  70.42 MOS       KDAK 
  PPD   BHZ  AK  --  +   a 340.85  71.90 ISC       PRP  
  COLA  S?Z  IR      C     339.68  72.30 MOS       COLA 
  MSVF  S?Z  IR      D     252.15  85.78 MOS       MSVF 
  BILL  S?Z  IR      C     338.06  90.48 MOS       BILL 

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