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
  HRAO  B?Z  IR      C      22.01   0.55 PRE       HRAO 
  NYAT  B?Z  IR      C       5.52   1.04 PRE       NYAT 
  TSWA  B?Z  IR      C      29.99   1.13 PRE       TSWA 
  RUST  B?Z  IR      C      39.92   1.51 PRE       RUST 
  LBTB  B?Z  IR      D     309.09   2.17 PRE       LBTB 
  CRLN  B?Z  IR      C      80.56   2.34 PRE       CRLN 
  WTBG  B?Z  IR      C      30.91   2.54 PRE       WTBG 
  NWCL  B?Z  IR      D     121.98   2.54 PRE       NWCL 
  LEPH  B?Z  IR      D       7.02   2.55 PRE       LEPH 
  MTLB  B?Z  IR      D     351.91   2.60 PRE       MTLB 
  BOSA  B?Z  IR      C     221.10   2.94 PRE       BOSA 
  CRAIL B?Z  IR      C      11.46   3.66 PRE       CRAIL
  HOED  B?Z  IR      C      58.52   3.72 PRE       HOED 
  POGA  B?Z  IR      C     104.84   3.91 PRE       POGA 
  POGA  HHZ  AF  --  +   a 104.84   3.91 ISC       POGA 
  GRAF  B?Z  IR      C     203.15   6.40 PRE       GRAF 

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